You're doing what 100 other startups are trying to do right now, connecting like-minded people through activites, just to name a few: Spontacts, Woofound, spotvite, aka aki etc.
They have all failed because if you're trying to be everything for everybody, you just end up being nothing for no one.
They have all failed because if you're trying to be everything for everybody, you just end up being nothing for no one.