Hmm, it crashed the browser on me (iPad 3, safari).

I went to the site, searched for a random band and picked a playlist (a large one ~500 songs if it helps). I went to the playlist view and started scrolling through the songs, relatively quickly. I noticed the "bar" at the bottom of the playlist view was flickering a lot, you could see the upcoming song rows through it when it flickered then 'bam' whole browser crashed. Relaunched safari, it still had the grooveshark tab open, almost instantly crashed again.