I tend to have a quick look to see who might be online whenever I log on, and there always seem to be a ton of "guests" - right now there are 10 members and 237 guests. OK, so some will be members who want a quick peek at something and can't be bothered logging in, but 237...??
Not saying we should limit them - we've got nothing to hide (quick tidy up of incriminating evidence...) and hopefully some will become full members (and then we can spend their subs on beer). Be interesting to know what the figures are for max users vs. how many are on when the DB throws a wobbly.

Oh, and, er, Hello, Guest-Type Peeps