Another paypal user her - good for paying friends etc (eg, I book a squash game and the other guy owes me £3.50, then he pays me on paypal - rare to carry change/cash these days!)
Also good for sending money to a "friend" overseas (friend being a big-titted exotic hottie who I've fucked multiple times).
Word of caution though - Paypal reveals your full name and email address to the recipient, so don't use it unless you are comfortable with that.