Tagging
This is a great suggestion, for all those that don't get what hes saying ...
So lets say i'm on forums or shoutbox.
I type something and i use hash tag (#) and user name, something like this: #Darkzside
Then i get a messages in my mailbox that i have beent mentioned (tagged) in shoutbox/ forums and there will be a link so i can quickly navigate to the forum/shoutbox where i was tagged.
This is good because you're friends or someone that wants you to read something important can easily notify you, instead of creating a private messages and saying "go check forum/shout box".
Ofcourse there should be a way to disable it, to stop spammers.
Pretty much this.
We take all (or most) suggestions into consideration. And suggestions to help improve game communication are good, but this is a bit outside of the realm of what this site actually is.