Had to post this since the manager of this band is an old mate of mine and I jumped when he appeared on my screen giving advice!
Attack! Attack! are building a following all over the world using the web as a main thoroughfare to their music but it all started with building a local scene.
Well worth ten minutes of your time, covering how a band can come togther from various members in a local scene, how the internet is central to all promotional effort, and, most importantly how concerted effort will get you noticed!