This hop is to mark the end of the Mayan calendar on 12/21/12 and all the speculation that abounds as to the reason it ends.
I, for one, think they just stopped marking it or it is to be repeated as our calendar does. I mean, really, our calendar ends every year so we just go buy a new one!
For some reason this book struck me as being a good "End of the World" book so I will be giving it away in this hop:
To enter the giveaway: