BuddyPress.org

@jtcreate Not sure on that end — I’m more of a front-end kinda guy, with fairly rudimentary server-admin skills. I’m running a couple of VPS’s with 300Mb memory for the MySQL server and 600Mb for the web server, and that’s running a fairly busy BP instance, a very busy forum, and a few other not-very busy sites as well, reasonably happily.

I did notice a very signification reduction in resource usage after deploying and tweaking W3 Total Cache, though, for what it’s worth.