This change to the Google bot search system was first spotted by Digital Inspiration, and later confirmed by Google’s Matt Cutts on Twitter. Cutts tweeted the following on Tuesday:
“Googlebot keeps getting smarter. Now has the ability to execute AJAX/JS to index some dynamic comments”
Before this implementation, Google’s bots were unable to trawl the comments section of sites that used third-party commenting engines such as Disqus, Facebook, and Intense Debate. Now, however, Google can index these comments–which is a boon for webmasters but a potentially sticky situation for people who are hyper-sensitive about privacy issues.
However, Google bots can now see comments you’ve posted in public forums, which include websites that use the Facebook commenting system, as well as public pages on Facebook itself. Remember–these comments were public to begin with, just not easily searchable.
And, well, now they are.
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As I said before, that comment would have technically been public all along, but now it’s just a little easier to find. Digital Inspiration points out that you can even search for things like “Commenter Name * Commenter Title” to find all of the comments that that commenter has made using the Facebook comments platform.
That said, this change isn’t all bad. Webmasters who use JavaScript-based commenting systems will hopefully see a boost to their SEO, since user’s comments will now be factored into their pagerank.