most new sites fail not long after they open. its for lots of reasons really. the fact that there are loads of sites offering the same thing is one of the reasons but its more down to dedication and cost. you need lots of these to stand a chance and many people do try hard, but to compete with the bigger sites it is just too much of a mission
i might just make mine a general forum where people can just chill out and chat, so i might just give the link to a few friends. i dont have any ideas on a good forum so im going to keep it simple for now