It’s not complicated. I want a site where I can set up an account, and create a list of bands I like, and the cities in which I might want to see them. Then it will send me an email, or dribble into an RSS feed, when a band I want to see is playing there. Ticketmaster have a system like this, but it appears to be no use to me: I tried five of my favourite acts — The Arcade Fire, The Weakerthans, Stars, The Mountain Goats and Final Fantasy (playing at The Spitz next month) — and it would only let me add Stars to my list. Fat lot of good.
Aloud have a genre-based email alert system and other sites (eg, Bigmouth, Stargreen, Seetickets) can only send you ALL their new gigs. I guess that even if one of these sites provided such a service, they wouldn’t be able to cover every gig that’s happening, as I found out with Ticketmaster, but it’d be a start. A comprehensive service would be far better of course.
This seems so obvious and simple a way to generate more revenue. I’d knock something up myself but one ignored (by me), clunky, scraping, notifcation site is enough for me.