What defines "sock" in the context of this message board?

[Part Multi 313]

The word "sock" gets thrown around this message board often. Is that like calling someone a "tube" or a "fisted blowhard"? Let me in on the secret.

[evince]

someone who has made more than one identity for themselves here (ort any site)


pretending to be more than one person by having more than one account

[Part Multi 313]

So one account with multiple people using it to make them appear like one person would be called a "foot", correct?