I'm thinking on it, and i guess, its good add for us.

for example, you are afk, and you got a pm, but you didnt know it, if you arent sitting @ pc. if you are in the room, you got a pm, and you hear a sound notification, like beeep or something
you can turn this on/off. its on you.

what do you think about that?

How would this be possible without reloading the page?

i guess, it can be made to autorefresh, if you got a pm. i think its possible to do it.