I got approved for a project at common-lisp.net. I haven't uploaded my source tree yet, but I have done a tarball.
Also, there are two mailing lists (one for developers and one for announcements), and even a wiki and bug tracking page (which I can't currently log in to; I've emailed the c-l.net admin about that).
Update 30 May 2008: Gary King fixed it (trac) on Memorial Day and dropped me an email. Thanks, Gary! Also, I uploaded a source tree and put it under darcs. See here.