Mostly because it is an overused marketing term with seemingly no real meaning aside from “a new generation of web sites with nifty features and groundbreaking/useful services.”
However, there’s a great comparison of US/JP Web 2.0 sites over at PingMag that’s definitely worth a look: Web 2.0 in Japan
Raising a family in Thailand // Documenting Issan food, culture, music, and people
