Getting back to the original subject suggested by greene, I'm still inclined to agree that some sort of "new members only" event would be nice, since there was this recent push to encourage new members. I'd suggest putting the "join" date back a bit before the new drive, so as not to make other recently joined members feel left out, but still gear it towards new members. A chance to get their feet wet and to see just how much fun this site can be.
