Home delivery of groceries

[Ghazban]

Does anybody have any comments on home grocery delivery services? (like Stop and Shop's Peapod in the Boston area-- I assume other such services exist elsewhere). I have no food in my house at the moment and the weather and roads are so crappy that I have little desire to de-ice my car to drive to the store.

Any good/bad experiences with these types of services are appreciated. Also, do you tip the delivery guy? There's a delivery charge built into the order but I normally tip pizza/chinese delivery people even when that's the case.