I've done quite well with it last year. I was running through Direct Agents, was their second biggest affiliate on it, the first was a network, I did thousands of leads.
Then they lowered the payout to $4 across the board, even for me, when I was getting more then double that, with excellent quality. Haven't run it since then, waste of time at that payout.
Had only mild initial success with it outside US/CAN- AU, NZ, Spain, Arabic. The UK offer was no go from the start.
I was running in the 2 DA Bidz.com comps (came 3rd, then 2nd), so there was no problem with shaving. However I did suspect that they shaved when the comps were not running - CR magically went up when the comp was back on.. but then I was also scaling, so cant say for sure.
There is a way to customize the landing page..