What does "Ghosting IP Address" mean?

Question

Sometimes when I'm playing Counterstrike: Source or Half Life 2 Deathmatch with my brother, after I die I get a message saying:

"You have been temporarily blinded for Ghosting IP Adress with another player."

My brother and I are both connected to the Internet via same router with service provided by AT&T.

What does Ghosting IP Address mean? Is it a bad thing?

Answer 1

I am a CS player ...

Ghosting is where you tell someone who is on the same network as you, where players are in the game if you are dead.

Basically.. because you are on the same network, you both have the same IP address to the server. The server see's this, and to prevent you from ghosting.

From wikipedia:

"Killed players become "spectators" for the duration of the round; they cannot change their names until they spawn (come alive) again, text chat cannot be sent to or received from live players; and voice chat can only be received from live players and not sent to them (unless the cvar sv_alltalk is set to 1). Spectators are generally able to watch the rest of the round from multiple selectable views, although some servers disable some of these views to prevent dead players from relaying information about living players to their teammates through alternative media (most notably voice in the case of Internet cafes and Voice over IP programs such as TeamSpeak or Ventrilo). This technique is known as "ghosting"."

Answer 2

ReprobatioN is right. It's because you're under the same router.

Answer 3

It means that your IP address is being masked and no one can see it. Meaning you're invisible and mysterious to the internet world and everyone in it.