Investment bux or bux pays only upgrade member- paying or SCAM?

Which investment bux or bux pays only upgrade member are legit or scam?
vampirebux
bagabux
onlineincomebux
buxproof
bemybux
vedambux
buxak
sheer-fresh
betterclix
excaliburptc
mintptc
ptcfunds

If you know other investment bux or bux pays only upgrade member write here, please.

I saw example proofs:
[Only registered and activated users can see links. Click Here To Register...]
[Only registered and activated users can see links. Click Here To Register...]

Buxpay is paying site but you have to upgrade your account or add fund to your account for payment .

Most of them are scam sites dear
but some sites paying