I designed this site about a year ago and it's my fastest growing site ever, in terms of usage. It currently gets over 8000 visitors per month and they're growing at about 30% per month.
The site has one of the most (if not the only) up to date club event calendar on the UK. The information is accurate as all the club event details are submitted by the promoter for the site
Together with the events calendar, it has a message board for people to chat and leave messages to each other, a tones and logos section to download mobile content to phones