Unfortunatley, if you remove the page portion from the URL it might make it better for non-duplicates in search engines, but it would make the forums very quirky for everyone trying to navigate them. When browsing, making a post, adding to favorites, etc, you'd always get sent back to the 1st page of the forum instead of the page you were on, and then you'd have to browse back to that page to resume reading.
The only option that might be possible is moving some of these things into the session to store your current page. So it's possible we can address this in a future version, but there's always going to be duplicate links at some point if just trying to judge by the URL. For example, the listing of topics. You might have a link to a topic that is on page 1 of the forum, but a few days later, the topic itself may not have changed but it's now on page 20. The page number is actually used here to determine which topics to display so it can't be tracked internally.
