I don't really have a band, but I use myspace to post stuff I've recorded, though recently I've used dmusic instead, but there really isn't much...exposure on there; but myspace is definitely a great marketing tool...Just about every band has a myspace somehow, plus there have been tons of bands that I have discovered on myspace and instantly fell in love with, like Chasing Victory and Chiodos; So yeah myspace is definitely good, except that there can be times when the band will get ripped off and some one will post their(as in the bands) songs, but that's still exposure I guess;