If you are in a guild or have alot of friends (who doesnt) or are arranging things (like tournaments) with multiple users, the ability to send a pm to everyone at once would be helpful instead of sending everyone a seperate pm (takes 4ever trust me).

while there may be concerns re: spammers using this to really bug alot of people, the benefits would seem to outwieigh the negatives, and its not something radically new.

People have suggested this, but it is being turned down because people could abuse it, and the mods have said no.

Moderator privilege.

get moderator and you will be able, else you wont

no

no.
and never going to happend.