Great list to start with.

Here are some more:

Video and Music (get their music/image out there! Post videos/playlists on your blogs, in forums, so on)
- Youtube
- Vimeo
- iMixes (via iTunes)

(thanks to Indie Artist X Marketing Project for ideas)

Forums (go talk about VAMPS - don't be obvious with advertising, might get banned):
Music Banter
Muzic Forums

If anyone can find places that let you post reviews then that may help a bit. I found the concert goer that allows you to post concert reviews but it wouldn't let me register.

I mentioned it up there ^ but Indie Artist X Project might be a good idea to watch and get ideas from. They are trying to find realistic ways indie artists can advertise themselves. They've got a secret artist who will receive advice from a team of people on promotion, fan development, commerce, etc. The artist must do all the work themselves. They are going to keep track of how well each strategy works so they can figure out the best methods artists can use.

Obviously we're not the band so we can't do all the ideas, but we can maybe watch for updates and adopt/modify ideas to fit our own usage.