This Is My Jam call themselves "a place to put your favorite song of the moment & hear great music, handpicked every day by friends". Once you are signed up for the site, which can by done by way of facebook or twitter, you can pick a song that is your "jam" for up to a week and are given 110 characters to say something about it. What brings the site to life is the social component which allows you to follow people based on their musical taste whose jams populate your timeline in a streamable playlist. I have been using the site with my phone for about a month now and have found it to be a fantastic soundtrack to my commute. By following people with similar musical taste, some who I know through twitter and others who I have discovered through the site's suggested people widget, there is an mix of familiar songs and music new to me that tickles my interests. For example my current timeline has Nine Inch Nails "We're In This Together Now", a song that I haven't listened to in years even though I own the CD single, and Poolside's "Do You Believe" which is a new to me but very much in vein of what I am interested in. Any site that can bring balance to my musical taste is a rare thing and worth a look.
Check out my jams at http://www.thisismyjam.com/discomonk.