I've used LevelUp a few times when it seemed novel to me, but that's about it. Just last week I got an email from them offering me a $2 credit to a frozen yogu

I've used LevelUp a few times when it seemed novel to me, but that's about it. Just last week I got an email from them offering me a $2 credit to a frozen yogurt shop near my office, and I figured I'll stop in for a froyo for next-to-nothing. I get there and they don't even have the scanner on the counter anymore. Oops. Honestly I think Square, with their auto-tab functionality, is the only mobile payment system I find myself consistently using as it is the only option that reduces the amount of work I do. Google Wallet, LevelUp, and friends require that I hold up the line to dig out my phone, unlock it, open an app, and present it to some reader. That's more work than just pulling out my wallet and giving them a card out of it.