I blogged previously about updates to Gallery which include a brand new commenting system.
This new commenting system is a core feature in IP.Board 3.1.3 and although we've not fully implemented it in the forums, it is in use by Blog, Gallery and Downloads.
As it's a core feature, you can easily add it into your own application just by writing a plug-in class.
A feature recap for the new commenting system:
- Makes full use of "ajax" so that there are no page loads between adding a reply, editing a reply, etc
- It makes full use of the new 'hovercard' system present in IP.Board 3.1.3 to allow mouseover pop-ups
- Automatically sends "like" notifications if enabled
When you mouse over a user link, it pops-up with the mini profile card.
I have written up some basic documentation on how to implement this here: http://community.invisionpower.com/resources/documentation/index.html/_/developer-resources/custom-applications/comments-r523