I use a set of playlists so complicated that I can hardly remember what they all do. They’re extremely useful for sorting through and rating my constant supply of new music. Excuse the lame names. The first thing I use is a “Recently Added” smart playlist that I use to find new music. The next playlist is “The Great Divide”. It is fed by a regular playlist that I add new files to that I want to listen to and sort. If I listen to something on that playlist twice without rating it, it leaves the playlist. If I give it a rating below three, it gets killed off as well. 3 or 4 or 5 start songs go on to “Potential”. If a song gets played three times and has a four or five star rating it gets added to my favorites playlist. If not, it’s layed to rest. This works very well if you have limited space on your ipod (I have a nano) and has a real radio feel to it.