i joined Rastabux on Jan, 8 2011 as an PTC-Refback referal program. Honestly, i didn't think that bux site named "Rasta" as a serious business, because of it's name. I just clicks on add, to gain bux from ptc-refback. But, after more than 2 months clicking ads, i saw that i'm wrong. Today i prove myself that Rastabux is a legit site with instant payment.
Rastabux is owned by Benoit Bodart from Belgium. The site created at June 2009, and launch at July, 1st 2010, so it's more than a half year established site.
Rastabux has middle clicks rate. First time launching, they offer 0.75 cent ads and 0.4 cent for ref clicks, max 5 ads a day for a standard member. But, they change the clicks rate without notification to members. By now, rastabux has 0.5/0.3 clicks rate for standard member. The min PO for first cashout is $2.
Rastabux use Alertpay and Liberty Reserve for the payment processor. Their paypal account got limited, so they no longer support paypal until the problem been solved.
So far, Rastabux is proven pay. Many payment proof can be found around the web, and i also paid as well. Here is my first payment proof from Rastabux, instantly via LR.