I've been obsessed with tourfilter lately. Its the craigslist of music.
1) list out your favorite bands
2) put in your email
3) get an email when they play in your town
Its really that simple, and its actually useful. I've bought a lot of tickets for shows i learned about through them. Shocking that people build functional, simple websites that actually do something for you and make your life easier!
Look forward to seeing what they do in the future.