Yes!

Though there is some confusion on the Internet about whether the best and most dominant search engine on Earth indexes Disqus comments, we have seen that they do in fact index the comments. This means that people searching for keywords in the comments may arrive at your site through the Google engine.

This is great news for Disqus users who are interested in optimizing their SEO.

Here’s the evidence:

We had a post on an email scam, which received immediate response on Google. Subsequent Disqus comments included new information pertaining to the scam. We searched this information and it showed up on Google results: