I think its a good idea.. add .ac.uk addresses and you have the whole of the uk covered too ;-) You need to look at all of the other anonymous / closed communi

I think its a good idea.. add .ac.uk addresses and you have the whole of the uk covered too ;-) You need to look at all of the other anonymous / closed communities out there and try and find a 'hook' that you can use to pull people in without seeing the content, make people feel like they are missing out on something cool. I don't know how you feel about facebook kind of stuff, but if you implemented facebook connect you could potentially show new visitors their friends which are already on the site and that would be a good impetus to sign up.