great idea
i tried to register that a while ago but someone got there b4 me grrrr... anyway, i'd define the counties a bit more by adding the towns and therefore narrowing the search results - a lot of towns wont have so many categories such as trendy, old worlds, student, live music etc so just leave it as county and then town - also on the results page i'd seperate the 2 columns, at the moment they seem to blend into each other and makes it very hard to read - other than that i love the idea and hopefully you'll get plenty of visitors - i'd also look at ratemyniteclub or incorporate it into what you have