At the 2007 EG conference, Kevin Kelly shares a fun stat: The World Wide Web, as we know it, is only 5,000 days old. Now, Kelly asks, how can we predict what's coming in the next 5,000 days? About Kevin Kelly Kevin Kelly has been publisher of the Whole Earth Review, exec editor at WIRED, founder of visionary nonprofits, and writer on biology and business and "cool tools." He's admired for his new…