UB Kill games - pro/con

[Penguinfan]

Sorry for the newbie stupidity, but when a player wins two in a row there are now 3 blinds posted? The regular blinds PLUS his double blind? What if he was due to be one of the blinds next hand anyway, and is the extra blind he is posting live or does he still have to call an unraised pot? If he is not already in one of the blinds, does he get the BB positon after the flop or is he just back in his rotation?

Thanks