Does anyone know what happened to BuxFast? They seems pretty legit, and they gave you 5-15 ads daily even as a free user, and each click was worth 2 cents rather then the usual 1 cent on most PTCs. I made $15 on that site but sudden;y the site just vanished! Now if you go to buxfast.com then you can just see a "this domain is up for sale" advert
Oh, and about active referrals, can't you just clear your cache, forbid cookies, and use a proxy to sign up as a referral? I did that one BuxFast and didn't get into any sort of trouble.