I love Macbook Air, but disk space is a real issue. This is most obvious when using it as main machine - media from iTunes and iPhoto in particular ends up leaving you with very little working space. How do you approach this problem?
How workable is it to keep this data on a Time Capsule shared drive? I can imagine initial performance when moving large amounts of songs etc. is quite poor, but how is it after that? Is, say, adding a batch of photos or incremental backup/sync of an iPhone noticeable?
A simple external drive attached via USB would seem the other obvious option. Or, perhaps the Air is simply never intended as a main machine - mobility is the key. In this case, do you temporarily dump media to it on-the-move and then move to your desktop when you get home?