Yup, I saved the bookmark to my homescreen. I believe they used to have a native app in the app store, but Apple pulled it. I think the native app is available in Cydia for jailbroken devices.
You need to upgrade to Grooveshark Anywhere ($9/month) in order to use the mobile app.
With an Android phone you can download an app called Dood's Music streamer which connects you to grooveshark for free.You need to upgrade to Grooveshark Anywhere ($9/month) in order to use the mobile app.
I was using the mobile app almost from the start and was only paying $3 per month. I cancelled it after a year because I still prefer my XM.
My uploading ability on Grooveshark was suspended after I uploaded copyrighted songs. You have to be careful because they won't give you a list of what is copyrighted. They just suspend your account to prevent you from uploading again on that account and then tell you what songs were copyrighted.
Assume it's copyrighted. Because unless it's an old song (and an old arrangement at that) it IS copyrighted unless released by te artist specifically as public domain.