We've got a lot of things going on, and while there haven't been any major updates since the visual refresh and OpenID, the next few months should be big.
http://nextupdate.com/blog/archives/2009/04/april-status-update-1/One of the most common questions and points of confusion about Sifter is comparing it to a help desk. While there is some overlap between help desks and bug tracking, they have some very important differences.
http://nextupdate.com/blog/archives/2009/03/help-desks-vs-bug-trackers/We'll only send emails for significant product announcements, and those happen every couple of months at most. Of course, we won't give away or sell your e-mail address either.