On a site of mine on each of the comments, I have something like: <a href="#comment-53" title=""> So this simply appends #comment-53 to the exisiting URL obviously and just re-directs the user to the comment in question. What I want to know is will SE see: mysite.com mysite.com/#comment-53 mysite.com/#comment-85 mysite.com/#comment-xx as the same page causing duplicate content? Or should I not worry about this?
Its on the same page, therefore it isn't duplicate content- only if the same content appears on multiple pages is it duplicate content.
This will be ok. It will not trigger a duplicate content filter. You are just navigating between links (locations) on the same page. The SEs will just see this a 1 page.