Good tool for sharing music, but watch privacy concerns.
Free playlists for every mood; no filter for iffy stuff.
Popular Internet radio app great for discovering new music.
Hear live radio or custom stations; iffy lyrics possible.
Fun but limited app lets friends compare iPod libraries.
Creative song-mixing app geared toward older teens.
Fun way to make your own tunes; some iffy user uploads.
Fun app lets Gleeks sing with perfect pitch; privacy iffy.
ID tunes instantly -- with iffy lyrics.