A false identity adopted by trolls and other malcontents to support their own postings.

An attempt by a person banned from a forum to circumvent the ban by creating a new account under a new identity.

Homer Simpson's greatest fear

An account made on an internet message board, by a person who already has an account, for the purpose of posting more-or-less anonymously.

sockpuppet is someone who is under the control of someone else with no mind of their own and lets other people make their decisions for them

1: A fake personality, usually a 'friend' or 'sister,' created by a drama queen/king for the sake of defending him/herself against others in an online forum.

2: Someone who might be an actual person but behaves like the above, defending someone who really deserves no defense.

(verb)(political)
Used to describe a person who has no original thoughts, opinions, or ideas of his/her own. Instead they regurgitate the "party-line" or talking points of others; usually of their particular political party.

Sock puppets can be seen on FauxNews and on Talk Radio. The GOP will put out its talking points and you can pick out the sock puppets because they will repeat the talking points; usually words for word.

Sock puppets can be seen among the Democrats and Left as well typically among young liberals who have adopted liberal bias without actually thinking. These specimens exist but are far more uncommon than amoung the Republicans, conservatives, christians and other right-wingers. Whose sock puppets cover the entire spectrum, as right-wingers are more likely to accept things on faith alone. Because if their leaders say its true, then it has to be true.