Eventually, there's going to be a plugin for iTunes that lets you upload metadata to the Social, meaning that some jerk who wants the Social, but loves his iPod is going to be able to use them together. It's not that hard to make if you think about it. Just like how you can use Last.fm with just about any Media player on your PC.
White Zune 30. Zune > iPod (no seriously, compare specs and features)