For those who do not yet know, you can put your Server(s)/Account(s) under your avatar (that appears with each post) by clicking User CP -> Edit Your Details (top-right in the sidebar menu) -> Scroll down to Additional Information, the third box from the top on the right -> Edit B-net Username and/or B-net Realm and click save.
I, uh, hope that helps some of you. Carry on!
(I'm Maelmord on the PTR, btw.)