Alex,
Ok, we will make some changes in version 8
Yaa!
Ok, ok, but first let us finish version 8.00. Please
As if you need my permission

But seriously, thanks in advance for this one.
Do you really think we should waste our time for some forum/chat development while we can spend this time for software improvements?
Now for another quote. . .
If you build it, they will come. (Field of Dreams)
I honestly think that there is a strong core of users - Kapz, Dobolomov, mp1, timn, jivetolkein, Heini_net, etc., along with some rising new talent like Paul_NHS and myself (ok, talent might be stretching it a bit

) that I really believe would benefit from this exchange. And remember, you benefit from this stronger base of users in the form of deliverables to your new customers like the collection of templates I'm gathering now 'on the side'.
I really don't expect that you would need to expend huge amounts of development time on this, as the tools are easily available and equally easy to implement. There would be some additional monitoring to insure appropriate use, prevent 'misinformation, and to 'capture' the wealth of good information provided.
The bottom line is, I think you would, in the long run, be the biggest beneficiary.
The one requirement beyond your time to set this up - You would need to invite your current userbase to participate. I know you have a working address book, you'd just have to be willing to use it. I think it would take off like a rocket if you were to launch this in parallel to (hint, hint) the announcement of a new major release. Your thoughts. . .