i like www.ringyard.com -- not a physical 'card', but an online account. You add $$ to your account and use a 1-800-access number to make calls + a PIN. I like it cause imho it's much easier than having to physically go to a store and buy a card - even if it's 4 AM you can re-charge your account and make calls, and you have your own 4-digit PIN, instead of entering long strings of numbers from the back of a card. for us myopic ones it's really nice not to have to squint to read that super-teeny type. LOL