1- Shazam on the iPhone can be used to tag songs. Just record a sample from a song you hear on the radio, and Shazam returns its title and singer. However, you cannot do this if that song is playing on the iphone. If you try this, music will stop, Shazam will freeze, and you'll probably have to reboot your iPhone. Sometimes this might be useful if you are listening to a streaming station which doesn't display the song information. Get another iPhone to tag the song! 2- Veency is a VNC server for your iPhone so you can connect your computer via VNC viewer and remotely use your iphone from your computer. A good use for this is if you need to type a lot of information and the iPhone virtual keypad is too hard for you to use. You can use this to type on your iPhone directly from your computer keyboard. However, keys like Tab, arrow keys, Delete, and numeric keypad do not work because the iPhone's keyboard doesn't support these features. Also, you have to keep on touching the iPhone's screen every time the screen goes to sleep. You cannot wake up the screen from your computer. 3- Pandora and AOL Radio can only play high quality audio via WiFi. When using them via 3G, they output low quality mono audio. There's no way to fool these apps into streaming hi-fi audio via 3G. Last.fm and others don't have this limitation.