Multi-accounting
Playing on more than one account on an online site, or letting someone else play your account ('ghosting'). Both are banned because they defeat the one-person-one-seat rule that tournaments rely on; ghosting scandals have stripped several online champions of their titles.
Frequently asked questions
What is multi-accounting in online poker?
Using more than one account on the same site — whether to play several seats in one tournament, to dodge a block, or to take extra bonuses. Every licensed operator prohibits it in its terms and conditions.
Why is it taken so seriously?
Because playing two accounts in the same game is effectively cheating: you see two sets of hole cards, and chips can be moved between the accounts. It also defeats the identity verification that licensing requires.
What happens if someone is caught?
Typically account closure, confiscation of the balance, and forfeiture of tournament winnings, with the money often redistributed to affected players. Operators detect it through device fingerprinting, payment details, IP patterns and play-style analysis. Sharing a household is a different matter — sites usually allow it but ask to be told in advance.