From Accounts->Privacy Settings you can edit your block list for this purpose.
No. You can chat to people, but there is no chat feature like on facebook.
when they chat to you it will go to messages
It means you can chat to people on Facebook who are your friends and are online when you are.
how you make your chat work on facebook it this you click where it sayed chat and you can see people if they are online or offline
Add people as friends, and when they are on facebook, they will appear in the Chat menu in the bar at the bottom. Click on someone's name to chat with them.
Schools block Facebook and other chat systems from their network. Attempting to circumnavigate this will get you expelled.
On Facebook, you can only chat with people that are your friends and they must be online. If you don't want to chat, just go offline
i'm not sure u can but u can block them or appear offline
As of October 2009, it appears that Facebook is using the following range of IP addresses for chat. I am not certain if they are using these IP addresses for any other features, and I am not certain if they have any alternate ranges.69.63.176.161 - 69.63.176.199(channel01.01.05.sf2p.facebook.com - channel39.01.05.sf2p.facebook.com)If you block these IPs at a firewall, chat should be disabled.
No, you can only leave the group chat yourself...
You can, you stupid person.
no you can only do 2 way chat in facebook. if you want to do 3 way chat, try using something like google talk (gmail) or msn.