Aha does a great job of surfacing all the attachments onto one page ((product > files), no matter where in the content they are(initiative, feature, requirement, release, added to a comment, etc). But if people write comments, they are buried deep in the pages. Unless I "watch" every item that is not assigned to me, they are easy to miss.
It would be really useful if there was a "comments" page or pages where I could easily catch up on the conversations. I get the standard flood of email notifications and I can parse them by subject, but it would still be very useful to have all the conversations in one place on line.
Having to manage conversations *only* through my own email makes the comments less useful overall.