There are quite a few differences between using PayPal or Skrill and a credit card like AMEX.
Let�s look at PayPal. PayPal is not available to online poker players in the US. Skrill is a
safe and reliable method, but there are additional charges associated with its use. It is
also in many ways a middleman in that in order to use it, you still have to transfer money
from your bank account or credit card. With AMEX, it is just a matter of entering your
information and then get to the action.