[cbhl]

How often do you spend from your paper wallet?

There are lots of paper wallet generators but it seemed like an exercise in frustration to actually use the private key on the page to spend the money.

[hapnin]

Whenever I need them.

I generate keypairs using the reference client on an offline device that never touches a network.

Private keys can be imported and spent using almost any wallet: Coinomi, Mycelium, the reference client, etc.