See someone you want to PM in the forums, but want an answer ASAP? Well, then I suggest that the wonderful site here gets online/offline buttons for underneath people's posts.
tis not a bad idea... since it's still a small community, i usually just rely on going to the front page of the forum at the moment, since it lists whose online at the bottom of the page there but i think something like online/offline buttons would be useful once the site gets bigger.
You might see something like that in the future. But right now it's not really a "high priority", but it would be a nice feature that we might implement one day!