gpt site are good but you need different ip if you wan to do same offers on other gpt site. and every time you do offer that need unique email. you have to have a change email. but you can make the most from those site. ptc is good a long as you on a legit one but you fairy will make good money iff you join a lot more than one. if you want to make a lot you need to invest in some referral or an upgrade if the program has it. it all depends on the person. reward site like swag bucks is pretty cool to. if you spend 2-4 hours doing every site everyday you see money add up like interst in the bank
the more site you work on the more you can draw from each site at the same time.