For the traders among us:
Ever happened to need an item urgently and couldn't find by making your own thread?
In that case sometimes you have to use the "Search Tool"...
Alot of times it provides with good results, but unfortunatly when you click on the threads you find out that the trader is offline..
That causes you to spend more time in searching an online trader..

For that, my suggestion is:
Enabling a little clickable box that will allow you to view only the threads that are made by currently online users (last seen up to 15 min or so)

Preview image, sort of like this:

good idea

Nice idea.

YES

awesome idea, sick of seeing people offline and wait for them forever :-( makes u have ur hopes up for no reason

yes

One of the greatest suggestions I've seen in a long time!
Good job

Very nice idea Niro. This would come in handy so often!

Good idea Niro

Nice idea but I think it's not possible , you got my vote anyway.