Back in February, as speculation built over how Facebook was going to work with PayPal (or compete with it), the two companies announced a formal partnership. Facebook would provide PayPal as a payment option in its Credits virtual currency, and it would do the same for its performance advertising system.
Now, the Ads payment integration is rolling out for all customers. PayPal is used by millions of people around the world, presumably including a good number of people who manage Facebook advertising campaigns — the news today will make paying easier for them, and maybe even get them spending more money.
For more on PayPal, Facebook, Credits, and payments, be sure to check out this guest post from early PayPal executive David Sacks.