http://audioscrobbler.com has to be one of the most neat ideas ive seen in this whole "online group of friends" phenomenon. just listen to your music like normal. it does the work and you can find out who shares your tastes. have fun and you're welcome. PS - song of the day is EASY LOVER. Dont listen to the fucked up phil collins live hits version. go with philip bailey all the way. it is SOOOO good.