"Those who buy and sell ISK, the game's currency, are not only exploiting the game, but unbalancing play. That's why the company decided to go drastic: a program they called "Unholy Rage,"
For weeks they studied the behavior and effects these real-money traders had on the game, and then they struck. During scheduled maintenance, over 6,000 accounts were banned. Hreiðarsson assures us that the methods were sound, and the bannings went off with surgical precision.
While the number of accounts banned in the opening phase of the operation constituted around 2 percent of the total active registered accounts, the CPU per user usage was cut by a good 30 percent."
Looks like they got the right 6000.