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Do you think comments are a ranking factor because of the keyword usage or because search engines can check comment count, for instance?

How a search engine can determine who comment if it's a local comment system? What about facebook comments?

I would try to add some unique content to each page. So, if you have a page about Pain Relef, try adding a paragraph on top about it. I wouldn't worry about duplicate links unless the whole page have exact duplicates.

I was talking about blog comments. In a high competitive market it might be interesting for Google to list sites with more traffic (or higher user engagement = # of likes = # of tweets = # of comments updates) on top.

I had this question because I've just added Facebook comments into my page and I'm going to use their graph API to load comments and put it within the page (so Google can crawl Facebook comments).

The only bad thing about comments is that they usually are very shallow in terms of keyword usage.

thx

Do you think when Google crawls your page, it "monitors" comments updates to use this as a ranking factor? If Google is looking for social signs, looking for comments updates might be a social sign as well (ok a lot easier to manipulate, but still social).

thx