If you live outside the US, you're allowed to make poker deposits with PayPal at European sites such as Pacific Poker, Betfair, bwin and William Hill.
For Europeans, PayPal is without a doubt one of the best poker payment methods.
If you live in the US, however, you'll have a hard time trying to get a poker site to accept a PayPal deposit.
The reason is simple: Poker sites accepting PayPal don't take US players and poker sites accepting US players don't take PayPal.
In other words, an online poker player's Catch 22.
For US poker players, we strongly recommend Poker Junkie's Complete Guide to Poker Deposit Options.
There you'll find a list of all poker deposit options from US poker sites that accept credit-card payments, eChecks and bank transfers to poker sites that actually allow Americans to use eWallets.
Even though the range of payment options for US players isn't as wide as in the rest of the world, there are always ways to fund a poker account.
But you'll have to forget about PayPal, unfortunately.