There's never been a lot of bear information out there, and certainly nothing the level of maintankadin or tankspot focused on druid tanking. There are a few good blogs and posts here and there, but that's it.
I'm not entirely sure why. The closest the druid community has gotten has been something like the druid wiki, but that's not really about bears; it's about druids. And that's what you'll find more than anything else; druids play druids, not bears more often than not. Darksend is a notable exception here.
The traditional place to start for questions about n00b bear tanking is Big Bear Butt Blogger, but for the most part the information there is wrong and/or out of date in bad ways, and more accurately it's difficult to find useful information; most posts aren't about bears at all. I keep some info at my blog; you may specifically find useful info for beginning bears at the bear faq, though it's not been updated for 3.3 yet.
The general consensus is that bear tanks are predominantly focused on playing cats or trees because in general they're more fun or more in demand than bears. That being said, bears are in the best position for tanking they've ever been in WoW. Still, that point has merit; while bears play well, they don't play fun for a lot of people, and the comparison between how they play as a bear vs. a cat is quite jarring.