This story about Web 4.0 (I don't know about you but I'm still trying to get my head around Web 2.0!) reminded me of a hilariously prescient Onion article titled "Fuck Everything, We're Doing Five Blades!" 

Here's the TechCrunch reference to Web 4.0 that got the linked author all lathered up (there, I tied the two themes together!)  For those keeping score:
Web 1.0 - The Information Web
Web 2.0 - The Social Web
Web 3.0 - The Semantic Web
Web 4.0 - The Intelligent Web (in ~20 years according to the poster linked above)

And while I'm at it, I think I've already figured out Web 5.0:



(MetaFilter has a thread on five blades but nothing on Web 4.0 yet as far as I could tell.)