Feature requests and other questions should be posted to the Feature request page at SourceForge. There is also an archive there.
Anyone interested in actively participating in development and related discussions can join the appropriate mailing list here. Archives are available here too.
Please report bugs, using the form at Sourceforge. Please try to verify that it is a Junkbuster bug, and not a browser or site bug first. Also, check to make sure this is not already a known bug.