I've asked your opinions/reviews on Visitrs (http://www.visitrs.com) before: http://news.ycombinator.com/item?id=957163 and http://news.ycombinator.com/item?id=736929
Since then i've made some changes to make it more a website based social application than a simple chat system. It is more like a socialized delicious, and an interactive stumbleupon. Yet it's being developed in the background, but i guess it's time get to get some insightful views, if you don't mind :)
Features being developed are browser extensions, follow/ignore mechanism, external authentication such as twitter&fb, and some more fixes, additions.
If anyone wonders about the software stuff: Visitrs runs on Django and mongodb interfaced with mongokit, uses xapian for indexing, ejabberd + strophe.js for chat system, memcached, and finally mootools.
Thanks