How do facebook mobile credits work?

[k.o. 71]

does the dollar or ten or what ever the conversiation is get added on to my bill? And is facebook mobile credits safe? (security wise)
I mean credits for games, and if I wanna pay them from a phone insted of a credit card. How does that transaction work?

[Vincent]

Are you talking about creidts on facebook like how it says you have "so many" credits in your account? If so, credits are credits you buy and that can be used for apps and stuff.

To pay them from your phone it will charge your phone. Click buy credits from the computer.

[?]

i
don't know

[Pet Miranda]

Facebook Credits currently supports the following payment options. Working with PlaySpan, It also offer a list of alternative international payment options for purchasing Facebook Credits.

Facebook accepts American Express, Discover, JCB, MasterCard, Visa and PayPal worldwide. Please note that if we do not accept your local currency, you may still be able to use these payment methods, but your transactions may be subject to foreign exchange fees.