There ought to be a better way of finding that favourite artists have new albums, singles or are touring. There's gotta be a niche for a web site that could do all that, and send an email when there's new news. It's a shame that AllMusic.com can't factor that in to their site, which is the perfect place for it. There are other ways of achieving it, such as hunting down Yahoo Groups for all the favourite artists, joining LJ communities for the artist (if they even exist) but a dedicated site would be a great idea. I would design it, if it weren't for the complete lack of web design and backend knowledge :-)
The Internet is FUBAR'd here at the moment, and giving very sporadic performance. Bleugh.