That site was awesome, but it has been down for almost a year! From what I understand they were changing servers and just haven't gotten it up fully, just yet. I loved it too, and usually I would tell you to go to www.classicbroncos.com, but right now it seems to be down. If Jon Hanna reads this I hope he could tell us a little about what has happened to both sites.
If my site was down it was only for a few minutes. I didn't notice, but then again I'm only on it 23 hours a day!
Bronco.com had server/hard drive problems. I keep hearing rumors that they'll be back up soon, but as petro says we've been hearing that for a year or more.
So in the mean time check out ClassicBroncos.com. The discussion forums are getting pretty active lately and most (but not all) of the tech stuff that used to be on Bronco.com can be found on other sites in my Bronco WebMap.