will save you the hassle of downloading album after album
its pretty much iTunes but you can search stuff up & listen to it without it being in your libaray
used it to listen to one of DOOM's instrumental albums last night
shit is swag...you can even log into your last.fm & scrobble with it...
only downfall is hearing 2 ads after 2 or 3 songs but it's still alright
so yeah...check the shit out if your tired of pirating music & hate listening to shit on YouTube
edit: be warned this is only available in some countries