I suggest a chatbox (sorry if it's been suggested before)
On SMF it's available, and free (as I know)
it can be added on the main website (so visitors can see it and become interested), and on the top of forums page, so we can easily share ideas.
Thanks
Sorry, but I don't think a chat program is in the best interest of the forum. It has been requested a few times and every time I research it I'm more convinced that I don't want it. The forum is designed as a way to have an open conversation and the information that is shared can be shared with all.
Who would want to waste there free time chatting about boxes ? ?
Who would want to waste there free time chatting about boxes ? ? 
The same people falling out of the sky because they're flying in planes made of air.