death realm... death.... dead characters. so they are dead. they may come back from the dead, but while they are there, they are dead. You get a system message when your character dies, telling you as the player, that your character is now dead. where does that character go after that? death realm. so, character in DR = dead character.
dead characters do not talk with the living ones like they are next door neighbors. so, you as a player still have abilities to talk to the guild through the ooc use of the guild channel, but your character most likely does not.
guilds based in the DR are just that. they all have dead members. just like guilds based in the land of the living have all live members. characters may be still in the guild if they move form one plane to the other, but character communication will be very difficult, or most likely none at all, until they return to the plane where the guild is based at. While at the same time, the player behind the character will have full access to the OOC guild channel keeping the player in touch with the guilds other players, but their character will not have decent communication with the other guilds characters. so the player is active in the guild, the character may not be. my stupid little equation post stands. (in the preceding paragraph, plane refers to DR or land of living.)