The search results are sometimes quite weird. For example I can search for "The Who" now and get all the songs for the artists. I'll change the iTunes API I use now to Spotify's (or Last.FM's) soon.
Sometimes if you click on a song before the javascript for the music player loads it doesn't work. I'll do my best to fix it soon.
I searched for "The Who" and almost 90% of the songs weren't by The Who, but instead song titles with "who". "Bob Dylan" worked fine.
Please, add support for lyrics, that would be simply awesome, and something Grooveshark is lacking.
Some songs just don't play, not sure why.
The search box is like "broken", I can't select with the mouse.
But it's great!