grooveshark is great but it could be better. What I like about Spotify compared to Grooveshark is their "playlist" feature where it shows top songs in the "US" or "UK". I know grooveshark offers that but most of the songs sometimes are really old while Spotify refreshes the list every so often. Also - I would use Grooveshark more if it had a better "ratings" feature for radio. When I thumb up/thumb down a song - it doesnt take into account why i did that (such as what Pandora does) and it keeps giving me music I dislike. I want to discover new music - Grooveshark allows this but a lot my friends don't have a Grooveshark account but still use the service w/o signin (now the ones who do use it - I love, since I can see what exactly they listen to and discover new music).