This is the forum component for Joomla right now in my opinion. I've tried a few forums and this one seems to have one of the best balances between maturity and updates/advancement
You did an excellent job on uddeIM, it even recognizes Agora avatars! (first plugin I've found that immediately picks that up without any tinkering). And there are a lot of options within this, from display options to actual usability (the contact list is a GREAT idea, and I love how it autocompletes user names)
Once again, excellent job!