Simple and a life saver. I'll be signing up as soon as this comes to NYC.

I get most things shipped to the office to avoid sitting around at home, but sometimes you get an item that's just too big - those items also tend to be more expensive, making the $6.99 thing more palatable. I hope their numbers account for this effect (i.e., disproportionately large packages).

Dealing with USPS pickup slips is the sort of pain I wouldn't wish on my worst enemy.