...do you wait for people to reply when you say "be right back?" Or for all those superawesome people out there "brb." Whatever. Do you?

I do, sometimes :cool:.

i wait for a response if i like them, and am not in too much of a hurry.

Mostly. :\

Nope. I just say it and go. I know if I don't I may not leave.

If I'm talking to my boyfriend I almost always wait.
I only say it and run when I gotta pea real bad. ^_^
Most other poeple I just say it and go.

i wait. always. unless i block them.