Paypal. They might charge exorbitant fees that piss people off, but the reality is, they provide a service that 26 million people a month keep coming back for.
Looking to capitalize on some fun, the send-money-to-anyone service has rolled out a new Website, Do Stuff For Money.

Since PayPal isn’t developing their online payment services and the list of countries ‘Send Money Online’ doesn’t get smaller you need to search for alternative services to PayPal. I have seen many people complaining about PayPal, because they are supporting merchants only in big countries and people from smaller countries can’t use the full PayPal [...]