They get multiple times the regular monthly fee from a single user.
Multiboxing uses third party programs to control the player's character. Apparently as long as the player actually controls the character him/herself, it's not considered against the rules.

I guess they think all these multiboxers are relatives of Goro from mortal kombat.

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Q u o t e:
They get multiple times the regular monthly fee from a single user.
Multiboxing uses third party programs to control the player's character. Apparently as long as the player actually controls the character him/herself, it's not considered against the rules.

I guess they think all these multiboxers are relatives of Goro from mortal kombat.

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Multiboxing, rules, and semantics

Also:
Mulitplexing (Boxing) Ban it.
Multiboxing with keycloner right or wrong