Without any doubt ReverbNation.com is the best website for unsigned bands. Operating in a similar way to MySpace, ReverbNation.com have more tools and controls, enabling the unsigned artists to create a manageable fanbase. The optimisation of this sites widgets and flexibility is excellent, you can update your status via twitter and add your blog’s rss feed. Not only do they provide a free service they also pay the bands a percentage of the profits generated by the artists page. They also have several premium products including a distribution add on. Get your music on 10 MAJOR MUSIC STORES (including iTunes, Amazon, Rhapsody, Napster, and eMusic), Collect 100% of the proceeds, and get FREE PROMOTIONAL TOOLS! Setup your albums for FREE and pay only when you decide to release them. (The fee is quoted as $34.95 at the time of writing this.)
A highly reccomended product!