Recently I discovered a new cool music web site : Blip.fm

You can create a playlist of your favorite songs and listen to them directly on the site. It's awesome to discover a lot of new band. Also, you can configure your profile so each song you add to your playlist are also posted on Twitter! 

Add me to your list of favorite DJ ==> blip.fm/meloman

...and on Twitter == > twitter.com/includebeer