Duplicate content issue

[nyanainc]

Hi

I installed a wiki and a forum to subdomains of one of my sites. The crawl report shows me duplicate content on the forum and on wiki.  This will hurt the main site? Or the root domain?  the site by the way is clean absolutely from errors. Thanks

[nyanainc]

Hi Dr Peter,

I just wanted to add some extra info for the readers. This was my goal. Its ok Wiki is gone for moment, as for the forum most possible I will make it as you advice (no index). as I dont seek traffic from it.I dont have time to manage everything. Thanks for your time

[Dr-Pete]

Sorry, I'm slightly confused. Are the wiki and forum duplicating each other, or are they each duplicating content on your root domain. Even in a sub-domain, they could be diluting content in your root domain, but it really depends a lot on the situation and extent of the duplication.

You could use the canonical tag to point them to the source of the content, or you could block them (probably META NOINDEX), but I'd like to understand the goals a bit better.

[KeriMorgret]

Actually, the original poster mentioned a wiki, but said nothing about wikipedia. I'm going to ask another associate to also look at this thread and chime in to make sure we've got this figured out correctly.

[nyanainc]

Thanks!

[mediabase]

Hey Nikos, if you are using wiki and forum in subdomains then surely you should getting duplicate content issue in webmaster because wiki takes first few content of a Wikipedia article and pastes it into your blog post. A link to the corresponding article is also included.

But I think as long as you have more unique content to over power that of a few content of wikipedia article and putting it at the end of the blog, it not being a problem as many sites use snippets of content from others as references.

I suggest you to please ensure that the main page shouldn't link to the subdomains in that case but subdomain can link to main domain. I think in that way your main domain will not get affected.

Well I advice you to read "How Changes To The Way Google Handles Subdomains Impact SEO" post, I am sure you will find solution. Thanks Cheers!

[nyanainc]

Cool! Is any way to eliminate them? Or is not necessary? I read one article about duplicate content article about forums and was written that google dont punish forums if they have duplicate content (inside the site) like pages,titles and stuff. Is true or that change? me personal I dont care to much about subdomains because I am promoting the main site and forum + wiki are just bonus for my visitors! ohh , by the way harald another tactic what i practise and is working is the folloing. i SCAN ALL the top 20 results and I am building the same backlinks. I mean from the same page. this what I can ofcource. but if you analyze them all you collect few good. rest I am buying them to pass my competitors. I am not an expert or whatever , so any advice will be appreciated. thanks

[mediabase]

Hi Nikos, if this are sub domains it will not hurt your main side -
sub domains a treated separately.

Harry

[Naghirniac]

I think the best solution is to use rel cannonical in the head section. Do you tried it?

You will need to include in every page (pages you want to be the official one) inside the head tag the follow:

where ww.example.com/index.html is your page adress. Good luck!