As a slightly unrelated note, how do these sort of databases actually get bootstrapped? I imagine as you get up and running, you'd end up with industry contacts, access to industry data sources and so on but I'd be interested to know how these sorts of things get started?
Ummm... no industry contacts. It’s just a bunch of people who are anal about music. It has always been like that in the Web 1.0 days: just a bunch of people being anal about something. And it worked beautifully.
Web 2.0: People anal about their egos and snipe and attack each other until everyone is the same level of sad and lonely.