Below are two links from blogger Netvalar that are helpful starting points for bands looking to grow their online presence. Both links are well thought out and can serve as a tidy checklist.

Five Secrets to Your Music Career:

http://blog.timelineonline.org/2007/10/5-secrets-to-your-music-carreer.html

Six Ways to Expand Internet Awareness:

http://blog.timelineonline.org/2008/01/6-ways-to-expand-your-social-awareness.html