Once you find a few stations you like, you can easily add them to your preset list, right from the station page. In addition, the station page gives you album art for the current song and the option to share via Facebook, Twitter, or e-mail. In some cases, you may also find a shopping cart icon that brings you to the MP3 or album listing on Amazon.com.
If you want to listen in your car, TuneIn Radio has a Car Mode that gives you big buttons to quickly switch stations while on the go. The only curious feature here is the ability to search -- I'm not sure you want to be typing in search terms while driving.
For those who are a bit more serious about their streaming media, an upgrade to TuneIn Pro ($4.99) might be worthwhile. The Pro version adds some nifty DVR-like features, so you can pause, rewind, and even record live radio. TuneIn Radio keeps all your recordings in a special section so you can listen to recorded favorites later.