Online poker etiquette isn't much different from that of a live
game. Just because you're not face to face with your opponents
doesn't give you the right to be a jerk. Mind your manners and
you'll get along just fine.
The following are a few specific tips relating to online poker
etiquette (that should be obvious to you):
-Never talk about a hand while it's in progress. Specifically, don't
reveal your hand after you fold.
-Try not to slow a game down. Play at a reasonably fast pace.
-Don't overuse the chat. Many players find it distracting and it
slows the game down.
-Don't swear or be verbally abusive. Treat other players as you
would wish to be treated.
Some additional tips that relate to live games:
-Manage your table space reasonably.
-Wait for your turn to act.
-Don't splash the pot. Arrange your chips neatly in front of
-Don't string bet. Grab the amount of chips you intend to bet,
and place them in one action.
-Don't hit on another player (or the dealer), no matter how attractive you find them.
-Show your hand quickly. Don't allow your opponent to think he's
won when you know he hasn't.
-Be modest when you win.