he says it is but i don't trust it! contact google directly if you chose to use them that the safest way! they always change their tos and I never received all my hits even after contacting him and he said he finaly added a extra 1200+ or something like that may work for some but not for me even tried another similar provider and had the same problem! good luck
pop unders are clearly against tos, and anyway this hitchampion site looks like shit: http://www.hitchampion.com/guarantee.php