I looked at them once before, and there's nothing super close to where I live (would need to drive to pick it up), but I'd definitely consider using it if there was someone who cooked within walking distance of me.
A friend of mine participates, so I tried some of his pretzels/granola and they were fantastic (and I'm not just saying that because he's a friend). I haven't tried anything else yet, but I've talked to him about the service and he's had a positive experience thus far.