PayPal is 100% secure, but if you break their ToS, your account ( and your $$$ ) will be put at risk. In order to avoid problems, read their rules, do your job ( and get as few refunds as you can - the best scenario is not getting any refund ). First thing first, make sure you are over 18 years when you open the account ( you will be surprised how many people get caught by this little mistake, even after years ). Second, don't forget: PP is not a bank, so my best advice is to withdraw your money as fast as you can after you receive payments, and not to keep them there. It's a horible feeling when PP, because of a countless reasons, block your money for 180 days.