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.
There are a couple ways that you can potentially achieve this. The Home->Activity page shows all activity throughout the entire account, and this can be a place to see all comments and updates in your Aha! account.
If you use Slack, you can also create a "comment" Slack channel which filters only Comment streams going on in the account. See more details: http://blog.aha.io/index.php/product-management-slack/
With these in mind, this should be able to help you achieve your goal. That said, we do not have plans to implement a specific feature around this as we've purposely kept the application lighter around comments to help users limit the amount of noise in the application.