There are still plenty of people out there playing D&D 3.5; probably more than are playing 4.0 if we're honest. There are still plenty of people buying 3.5 publications. Maybe I've missed it, but in the shiny new regime I can't see anywhere dedicated to 3.5 material. Why on earth not?
There is in a way, it is called D&D Previous Editions, just look down a aways.
You can not back up any claim about the number of active players for each edition,so it is not worth even trying to bring up.
Also, just a bit of infor here, but since both 4E and previous editions have a general section, I dsecided to check the number of threads with any posts since the boards came back up, and 4E general has ~ twice the number.
Oh good grief, I'm not trying to start an edition war, nor do I have the slightest intention of discussing why a self-selecting user community isn't in the least representative; I'm just trying to find a 3.5 forum... and for that information, thank you very much. 
Edit: Hmmm... 13 posts? 13?!? Something odd has happened to my post count, methinks. Ah well!
Jarred,
Methinks that oyu may find your 3.5 fourms via Piazo with their Pathfinder and any ofther company that may still print/publish 3.5 stuff. However, your probably not ever going to find it here. Why have forums over something that WotC doesn't support anymore? They're a business and they cannot make money if people aren' talking about the edition they're supporting.
Individual questions on the other hand could be answered by other members of the forum and by the looks of things you've already started one but I think your getting your hopes up if your looking for something official
Best Regards
Dragonclaw
Dragonclaw you are completely incorrect. The 3.5 ruleset can still be discussed in the Previous Editions forum, and the D&D community forums are edition neutral meaning topics about any edition can be discussed (as long as they are appropriate to the forum).
Jarrad, everyone's post count was changed during the recent transition.