Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
Sub-domain with spammy content and links: Any impact on main website rankings?
-
Hi all,
One of our sub-domains is forums. Our users will be discussing about our product and many related things. But some of the users in forum are adding a lot of spammy content everyday. I just wonder whether this scenario is ruining our ranking efforts of main website? A sub domain with spammy content really kills the ranking of main website?
Thanks
-
Hi vtmoz,
I see you have posted an updated question on this issue separately - regarding the spammy inbound links pointing to this subdomain. That is a more likely problem for your site.
That said, the more spam that shows up on that subdomain, the more likely Google is to seeing your site as part of a "bad neighborhood" of the web, and this could risk the organic visibility of your root domain.
There is no documentation on "how much spammy content is too much" - generally, some spammy content on a subdomain doesn't negatively impact the entire domain. However I have seen cases where an entire domain was negatively impacted by a very large number of spammy pages on various subdomains. It's a matter of scale.
If your rankings and traffic on your primary domain are important, my advice would be to mitigate the risk by either policing the content on your forum subdomains by bringing in admins, or shutting down the forums entirely.
Best,
Mike
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Why my Domain Authority (DA) is Decreased
Hello, I would like to know how the changes in domain authority is considered by MOZ? Domain Authority for my this domain https://factohr.com was 14 and it is decreased to 13 in this week. Though i have a very decent and good links going over to all my pages howcome my DA is affected and decreased. As its regularly being updated and has a high quality traffic! i would like to know the reason behind decrement in DA and is there any connection with redirection of .com domain? How can i increase DA for my website?
Algorithm Updates | | MyMoz710 -
Do the sub domain backlinks count for main domain and increase authority?
Hi all, I just wonder if the back links for different sub domains will be counted and considered to rank the main domain better or they are just limit to sub domain pages? There are many websites which has got multiple sub domains which receive backlinks? So the backlinks to main domain and sub domain weigh same at Google? Thanks
Algorithm Updates | | vtmoz0 -
Very strange, inconsistent and unpredictable Google ranking
I have been searching through these forums and haven't come across someone that faces the same issue I am. The folks on the Google forums are certain this is an algorithm issue, but I just can't see the logic in that because this appears to be an issue fairly unique to me. I'll take you through what I've gone through. Sorry for it being long. Website URL: https://fenixbazaar.com 1. In early February, I made the switch to https with some small hiccups. Overall however the move was smooth, had redirects all in place, sitemap, indexing was all fine. 2. One night, my organic traffic dropped by almost 100%. All of my top-ranking articles completely disappeared from rank. Top keyword searches were no longer yielding my best performing articles on the front page of results, nor on the last page of results. My pages were still being indexed, but keyword searches weren't delivering my pages in results. I went from 70-100 active users to 0. 3. The next morning, everything was fine. Traffic back up. Top keywords yielding results for my site on the front page. All was back to normal. Traffic shot up. Only problem was the same issue happened that night, and again for the next three nights. Up and down. 4. I had a developer and SEO guy look into my backend to make sure everything was okay. He said there were some redirection issues but nothing that would cause such a significant drop. No errors in Search Console. No warnings. 5. Eventually, the issue stopped and my traffic improved back to where it was. Then everything went great: the site was accepted into Google News, I installed AMP pages perfectly and my traffic boomed for almost 2 weeks. 6. At this point numerous issues with my host provider, price increases, and incredibly outdated cpanel forced me to change hosts. I did without any issues, although I lost a number of articles albeit low-traffic ones in the move. These now deliver 404s and are no longer indexed in the sitemap. 7. After the move there were a number of AMP errors, which I resolved and now I sit at 0 errors. Perfect...or so it seems. 8. Last week I applied for hsts preload and am awaiting submission. My site was in working order and appeared set to get submitted. I applied after I changed hosts. 9. The past 5 days or so has seen good traffic, fantastic traffic to my AMP pages, great Google News tracking, linking from high-authority sites. Good performance all round. 10. I wake up this morning to find 0 active people on my site. I do a Google search and notice my site isn't even the first result whenever I do an actual search for my name. The site doesn't even rank for its own name! My site is still indexed but search results do not yield results for my actual sites. Check Search Console and realised the sitemap had been "processed" yesterday with most pages indexed, which is weird because it was submitted and processed about a week earlier. I resubmitted the sitemap and it appears to have been processed and approved immediately. No changes to search results. 11. All top-ranking content that previously placed in carousal or "Top Stories" in Google News have gone. Top-ranking keywords no longer bring back results with my site: I went through the top 10 ranking keywords for my site, my pages don't appear anywhere in the results, going as far back as page 20 (last page). The pages are still indexed when I check, but simply don't appear in search results. It's happening all over again! Is this an issue any of you have heard of before? Where a site is still being indexed, but has been completely removed from search results, only to return within a few hours? Up and down? I suspect it may be a technical issue, first with the move to https, and now with changing hosts. The fact the sitemap says processed yesterday, suggests maybe it updated and removed the 404s (there were maybe 10), and now Google is attempting to reindexed? Could this be viable? The reason I am skeptical of it being an algorithm issue is because within a matter of hours my articles are ranking again for certain keywords. And this issue has only happened after a change to the site has been applied. Any feedback would be greatly appreciated 🙂
Algorithm Updates | | fenixbazaar0 -
Having 2 domains with same name - Impact on SEO
Hi AllAs we still dwindle with the rankings not coming in line with the efforts.I have a question: We have 2 websites 1. http://www.example.com/ (which lost traffic and rank in Jan 2013). So we assumed that it was due to some penguin penalty. So we worked on disavow extra but nothing actually helped.Though there was no manual penalty mentioned in the GWT. Frustrated with this we thought of having another website 6 months back: 2. https://example.org/ - we did all the right things and by the book. But we are not seeing ranking here too. We did backlink analysis on all competitors and worked on only quality links they had. So all our links are highly highly relevant. But still the ranks are not moving beyond third page...in fact they moved to 6-7 page in last 2-3 days. Please suggest .. 1. is it due to same name of domain (our brand name) causing the issue. If yes should we go for 302 or 301 redirect to save ourselves from any penalty that our last website may have got. We can not leave that name unattended as our cataloges etc have that website mentioned. i will expect a scientific reply here not gut feeling please. 2. Is it to do with .org domain extension that it should not be with commercial organizations like us Kindly reply at the earliest Regards Aman
Algorithm Updates | | Aman_1230 -
Exact Keywords Domain name
Hello everyone!, I would love to have your opinion on this matter. I am working on a company e-commerce site; these guys would like to change their domain name AND their company name, so the most logical thing that came to mind was to name the domain after the company name. However, they also bought in the past a domain that have the exact keyword they would like to rank for. I know that keywords in the URL are not as important as they used to be in the past, but nonetheless when I do a Google search for those keywords, 3 domains out of 10 on the first page are slight variations of those same keywords, meaning that they might have a really good domain name (also the other result are government, medical stuff and so on). And, no matter how many times I have read that keywords in the URL are not so important anymore, I still see a lot of sites ranking also because of their domain name (well at least outside the US) So, my question here is: would it be better for them to use the exact match keyword-domain name or should they use their company name for their new site? Or some sort combination of the two? (the keyword-domain that in some way points also to the brand domain). Thanks for your opinions on this; really appreciate it! Cheers
Algorithm Updates | | Eyah0 -
Sitemap link in footer?? Is it needed
Hi, I know sitemap is important to have as it tells google the pages to crawl. I have an xml sitemap for google to crawl. However, Do I need a sitemap link in footer. Any thoughts?? Does it have any harm if I dont include a sitemap link in footer
Algorithm Updates | | pejman500 -
Decline in traffic but no change in rankings
I'm comparing our best search traffic month in 2011 (March) with our current traffic (April)and have seen significant declines in traffic, despite no change in our rankings or even improved rankings for the same terms. Trying to sort out an explanation. We have been a white-hat SEO site since our inception over 10 years ago. Our SEO consultant doesn't think we've been affected by any algo changes, at least not to any significant degree. My only explanation for this possibly anomaly is: decrease in the use of the KW terms in search over time (how to determine?) generalized increase in PPC instead of organic search driving traffic possibility that Adv Web Rankings is no longer accurately collecting SERP rankings Does anyone have any other thoughts or considerations that might explain the decline in traffic, despite maintenance or improvement in rankings? Thanks.
Algorithm Updates | | ahw0 -
Youtube dofollow link to web site
Is there still a dofollow link back from a youtube channel to your web site? I filled in the site url in the profile, which in my understanding used to be the single dofollow link back to your web site. However, when I view the page source for the youtube channel it shows up as a nofollow link. Also, in OSE the link does not appear. Has this changed or am I just not doing this correctly?
Algorithm Updates | | uwaim20120