2.) If anyone is online they never speak, or have anything to do with the other members.
3.) The Guild charges any kind of fee, dues, whatever for membership or otherwise..
4.) The Guild leadership refers to its members as "NOOB" "SUXXOR" "PWNED" or any other variety of genital-envious misnomers.
5.) Members up and quit for no good reason; missions, quests, guild.
6.) People would rather talk smack than organize and actually do something. The guild is nothing but a "smack-talk" chat channel. You already get that for free with local chat in any mission or city zone!
7.) The leaders spend all their time bragging about their uberness and mad skillz but can never actually do anything.
8.) During missions, farming and "drops" is more important than the mission goal.
9.) Loot is constantly fought and argued over.
10.) Losing a PvP or GvG match results in a shouting match to determine who is the most genitally challenged.
If your guild demonstrates any of the above, exercise good judgement, hit your "G" key, and select yourself to immediately disband.
You'll thank yourself in the long run, and your guild will have to search for new people to abuse instead of you.

Talesin