Grooveshark is really good for when you're at school and they blocked youtube. a good way to pass the time if you've got headphones.

I don't think its that great, songs are rarely tagged properly and (for me anyway) the loading screen freezes for ages.

I use it all the time, it works great and almost always has what I'm looking for.
Grooveshark - Listen to Free Music Online - Internet Radio - Free MP3 Streaming

in my opinion, Spotify is better.

I use it when I want to hear something before downloading.

Bump

Grooveshark - Free Music Streaming, Online Music

I've found GS often has only SOME of the tracks of an album I want. Weird. I usually use it if I can't find what I want on Spotify, but I would definitely go for Spotify over Grooveshark.

^ This.

I never use it ever when it comes to albums or regular listening. But I like the idea of broadcasting.

I use it all the time when I'm getting a feel for artists I've just discovered.

Every now and then I'll listen to an album on there for the heck of it