Guy, this one had no account maintenance requirement. I guess I could have closed the account as soon as I got home and submitted the shop (not that I'd recommend that.. again, I don't think doing this shop makes sense unless you already want to open a credit card). I just had to fill out the report when I got home, they seemed primarily interested in compliance type questions: did the CSR properly explain the terms and conditions, was I read the proper disclaimers, did they provide me with the right paperwork, etc.
If, in a few years I'm ready for a new credit card again, I'd absolutely do the shop again. It paid well for the time spent. But again (or maybe this is again, again), I wouldn't open a new credit card just for a shop. Sunny's right that they'd have to be talking Powerball-level fees to get me to open a credit account that I wouldn't otherwise use or that didn't meet my needs.
Shopper in California's Bay Area