From Songkick, I think it would be interesting to understand if people buy tickets online or not. I believe it's too expensive but as soon as tickets start to be digital only that will be a non issue.
Just to get this clearer, I commented on this because I'm a fan of Songkick and have been working around the music industry since I was a teen as a journalist first, a founder of a record label and also a promoter so while I know my data is pretty accurate I also know how limited it is geographically. I know this business in the UK is much more similar to the US than to europe in general too.
That's it, keep up the good work!
I used to subscribe to a number of newsletters to try and find the gigs I wanted to go to. Now I get an e-mail from Songkick whenever an artist that I listen to is in town, and I certainly do use their links to go and buy tickets. It's been really useful for me.
I don't think the value is just in the listing of the gigs, but how they've combined it with tools to learn who you listen to (aka track), and the social media connections (capturing tweets while you're at gigs, etc.). So while Last.fm has a more valuable dataset, Songkick as a whole has just as compelling a value to me as a concert-goer.