you can speculate because of the price that these account's are hacked, but do you know for a certainty that these account's actually are?
i could be a good semaritan losing my own money selling accounts i payed for myself for less to provide the sweet people of bitcointalk with cheap netflix, it is unlikely but possible isnt it?

even if they were, ive seen a million of these posts about selling accounts, aslong as i dont sell accounts that willl get locked in a week what's te problem?
even if they do i will give a free replacement?