While we are already living in a post-PC world full of iPhones and Droids and Xooms, that day isn't quite here yet.

We're excited about the emergence of a post-PC world and opportunities to reach audiences on whatever 'piece of glass' they choose.

Within I.B.M., the post-PC world is called "pervasive computing."

Steve Jobs, when announcing the iPad 2, described the new "post-PC" world:

"We're not 100 percent of the way to a post-PC world yet, so the option of connecting back to a USB device is nice."

If we were truly in a post-PC world, such a move would be pointless.

This is the post-PC world: sealed systems that trade flexibility and connectivity for appliance-like simplicity, casual interfaces, and convenience.

Certainly, having spotted the next big discontinuity, he is banking on his Powerparts strategy to turn Metrowerks into a major player in the post-PC world.

Nevertheless, Intel and companies that depend on it, like Microsoft, have begun adjusting their strategies for a post-PC world.

"In a post-PC world, consumers have a more intimate relationship with their devices," Rotman wrote on her blog.