Since Artistdata ceased there has yet to be a comprehensive, one-stop-shop hub site that covers all the event post publishing territory that it covered.
I'm so happy that bandsintown are here though. It's awesome!
Just some additions here and there and it will take off where Artistdata left off.
One of those additions would be to have a gig/tour listing widget (with map) that can be inserted into a band's official website (although Artistdata didn't do this feature per sé, they seamlessly linked in with Reverbnation's tour widget, which does do this).