Well i would say that spotify is better than grooveshark because grooveshark - web based not really ideal because you have to be on the intenet all the time and the are no socail network features.only avalible on pc and mac from what i know spotify- brilliant as has social network features and avalible on iphone and other things more well known. the only bad thing is that u have adverts if you dont pay but thats the way they make their money (if u dont pay)\nyou can also buy songs and sink with ipod and iphone and android.