Great advice folks! Using smaller cards to reduce your risk of loss seems like a good idea. I also heard on another podcast that it's a good idea to format the cards every time that you re-insert them, to help prevent corruption, presumably from a flipped bit somewhere.

By the way, how important is card speed these days? I heard that since cameras come with a fair amount of cache, it may not be as important. I'm thinking of going with a middle of the road speed, such as 20MB/s or so, rather than the bleeding edge extra expensive cards for now. Cheers.