Please.
Stop doing this.
I beg of you.
I can't tell you how many times I've left blockland open to find messages from multiple different people.
When I open the RTB gui, all I get is a few windows with "dren" or "drendran??" written in them.
If you have something to tell me, for god's sake just loving say it, you don't need me to respond first, I'll loving read your stuff when I get back.
</rant>
This goes for skype and steam too, but its worst on RTB, where the sender has most likley signed off and can no longer be reached.