Well the PTC sites some disappea within weeks. Bux.to however has been operating since january 2007 and its still around so i premuse they pay.
Bux.to | .view .click .make money
I don't bother ith Yuwie for the minor $0.44 a month it makes me. I bother becuase there is a large amount of people sharing information and ideas about making money on-line.