Welcome to the Q&A Forum

If you've been with Moz a while, you may have used our old Crawl Test tool. A year ago we launched an all new, campaign-based Site Crawl (with an entirely rebuild crawl engine), but Crawl Test fell into disrepair and we haven't had a solid tool for crawling non-campaign domains. I'm happy to announce that we've just launched an all new On-Demand Crawl, built on the new Site Crawl engine, with a UI that's focused on quick insights. Moz Pro Standard tier customers can run up to 5 crawls per month at 3,000 page per crawl (crawls are saved for 90 days), with per-month limits increasing at higher levels. Most On-Demand Crawls should run in a few minutes, making the tool perfect to get quick insights for sales meetings, vetting prospects, or analyzing competitors. We've written up a sample case study or logged-in customers can go directly to On-Demand Crawl. Try it out -- we'd love to hear your use cases (either here or in the blog post comments).

We've seen a lot of reports, including Q&A questions, of sites showing bad dates in Google SERPs. I've verified this bug in the wild. There are also reports of bad dates being caused by YouTube embeds, with Google taking the video date instead of the page date. I can also confirm this is happening, although I don't know if it accounts for all of the bad dates. Some people are reporting that these bad dates showing up corresponded with ranking drops. Usually, I would treat that as a coincidence (Google could easily launch an update and have a glitch on the same day), but in some of the reported cases, removing YouTube embeds led to ranking recovery soon after. I can't verify this, but I can't disregard it. There seem to be multiple reports of this recovery. I'm in communication with a Google rep, and they are unaware of any direct connection between a bad date and ranking (such as some kind of QDF effect). I've passed along some data, and they are investigating, but there may have been multiple updates in play that are making for noisy data (even for Google). There did seem to be heavy algorithm flux on November 10th and 18th, with some people speculating the latter spike was a reversal of the former. I have no evidence to support this, but MozCast data and chatter do seem to support both spikes. If you've been affected by this problem and the ranking drops are severe, it's worth temporarily removing YouTube embeds (if feasible). Replace them with direct links (or maybe a linked thumbnail) and have Google re-fetch the page. I can't guarantee it will work, but the risks are low. It's easy to restore the embed. Update (11/22) - Gary Illyes is saying on Twitter that the date problems have been fixed. If you see the proper dates cached, but have not seen rankings recover, then these may be unrelated events.

We've had a few questions regarding the new Keyword Difficulty score used in Keyword Explorer, and how it compares to the old score in our stand-alone Keyword Difficulty tool. Specifically, people want to know why some scores are much lower using the new tool. There a general discussion of the math behind the tool in this post: ​Keyword Research in 2016: Going Beyond Guesswork One of the problems we had with the original Keyword Difficulty score is that, because it's based on our Page Authority (PA) score and PA tends toward the middle of the 0-100 range, Difficulty got a bit bunched up. A Difficulty score in the low-to-mid 20s (via the old tool) is actually very low. So, we set out to re-scale the new tool to broaden that score and use more of the 0-100 range. We hoped this would allow more granularity and better comparisons. While the logic is sound, we're concerned that we may have been too aggressive in this re-scaling, given recent feedback. So, we're going to be analyzing a large set of keywords (anonymously, of course) that people have run through the tool to see if too many Difficulty scores seem too low. If they do, we'll make some adjustments to the math. In the meantime, please be aware that low scores may appear lower in the new tool and very high scores may appear higher. We wanted to address some of the limitations in V1 and feedback over the years, and so the old and new scores really can't be compared directly in a meaningful way. We're sorry for any confusion that has caused, and we will re-evaluate if necessary.

We've had a few questions about the line labeled "Update" in Google Search Console on the Search Analytics timeline graph (see attached image). Asking around the industry, there seems to be a fair amount of confusion about whether this indicates a Google algorithm update. This is not an algorithm update - it indicates an internal update in how Google is measuring search traffic. Your numbers before and after the update may look different, but this is because Google has essentially changed how they calculate your search traffic for reporting purposes. Your actual ranking and traffic have not changed due to these updates. The latest updated happened on April 27th and is described by Google on this page: Data anomalies in Search Console Given the historical connotations of "update" in reference to Google search, this is a poor choice of words and I've contacted the Webmaster Team about it. 2CsyN7Q

We're getting a lot of questions about the upcoming Google mobile algorithm update, and so I wanted to start a discussion that covers what we know at this point (or, at least, what we think we know). If you have information that contradicts this or expands on it, please feel free to share it in the comments. This is a developing situation. 1. What is the mobile update? On February 26th, Google announced that they would start factoring in mobile-friendliness as a ranking signal. The official announcement is here. Of note, "This change will affect mobile searches in all languages worldwide and will have a significant impact in our search results." 2. When will the update happen? In an unprecedented move, Google announced that the algorithm update will begin on April 21st. Keep in mind that the roll-out could take days or weeks. 3. Will this affect my desktop rankings? As best we know - no. Mobile-friendliness will only impact mobile rankings. This is important, because it suggests that desktop and mobile rankings, which are currently similar, will diverge. In other words, even though desktop and mobile SERPs look very different, if a site is #1 on desktop, it's currently likely to be #1 on mobile. After April 21st, this may no longer be the case. 4. Is this a boost or a demotion? This isn't clear, but practically it doesn't matter that much and the difference can be very difficult to measure. If everyone gets moved to the front of the line except you, you're still at the back of the line. Google has implied that this isn't a Capital-P Penalty in the sense we usually mean it. Most likely, the mobile update is coded as a ranking boost. 5. Is this a domain- or page-based update? At SMX West, Google's Gary Ilyes clarified that the update would operate on the page level. Any mobile-friendly page can benefit from the update, and an entire site won't be demoted simply because a few pages aren't mobile friendly. 6. Is mobile-friendly on a scale or is it all-or-none? For now, Google seems to be suggesting that a page is either mobile-friendly or not. Either you make the cut or you don't. Over time, this may evolve, but expect the April 21st launch to be all-or-none. 7. How can I tell if my site/page is mobile-friendly? Google has provided a mobile-friendly testing tool, and pages that are mobile-friendly should currently show the "Mobile-friendly" label on mobile searches (this does not appear on desktop searches). Some SEOs are saying that different tools/tests are showing different results, and it appears that the mobile-friendly designation has a number of moving parts. 8. How often will mobile data refresh? Gary also suggested (and my apologies for potentially confusing people on Twitter) that this data will be updated in real-time. Hopefully, that means we won't have to worry about Penguin-style updates that take months to happen. If a page or site becomes mobile-friendly, it should benefit fairly quickly. We're actively working to re-engineer the MozCast Project for mobile rankings and have begun collecting data. We will publish that data as soon as possible after April 21st (assuming it;s useful and that Google sticks to this date). We're also tracking the presence of the "Mobile-friendly" tag. Currently (as of 3/25), across 10,000 page-1 mobile results, about 63% of URLs are labeled as "Mobile-friendly". This is a surprisingly large number (to me, at least) - we'll see how it changes over time.

Google just announced the new 12-pack site-links 2 weeks ago, and now it looks like they're testing some changes that restrict it to a 6-pack. Are others seeing this? Has anyone seen an official report (Google blogs or major search site)? Is this an homage to beer or abs?

Thought I'd see what the asking side of Q&A feels like 😉 We've been hearing for forever that the internet is running out of IP addresses, but I finally encountered the reality of it. I just realized that one of my sites is on a shared IP (hosted by Hosting.com, formerly HostMySite.com). My other sites with them included a unique IP, so I was surprised to discover this. They claim it's due to limitations on their IP allocations. Hosting.com doesn't have the option to buy a unique IP, but some other hosts do. I noticed, though, that many of them are using IPv6 for the new accounts. Has anyone had practical experience with having an IPv6 address and is there any impact on SEO?