LOL!..... LOL!
Yeah, I'm sure everyone here has heard all of it. But half of that stuff looks like you just made half of that crap up.
First, the Mayan calendar didn't predict stuff like the WW's. And a man-made calendar cannot be infinite, maybe the year 2012 is when they didn't feel like making it anymore, since they would never see to that year anyways.
Second, the web bot is only a stock market tool. They are programs, they don't have a mind of their own to make predictions out of nothing. They probably just crawled over a bunch of conspiracy websites.
As for the predictions of super volcanoes, asteroids, and the such, if you've ever watched the discovery channel, you'd know there are predictions of things like that happening every few years, its not just 2012. I remember watching predictions like that for the 90's and all through the years 2000.
I do think there are some viable future predictions, but I won't post them here. You lacked doing any research on your list before you posted this, and just posted some word of mouth stuff. If I just posted stuff, I'd have a feeling it'd just pass along as word of mouth just like this stuff, not showing any real interest in it, so I'll save it