Web 2.0

Sometimes we don’t quite process that billions of people on the planet get unlimited entertainment, voice and video calling, maps, restaurant reviews, weather, news, an encyclopedia, mail, messaging, and more for *free* just because 1-2% of us click an ad every now and then.

@cdixon: Web2 is built on advertising. Big companies like Facebook and Google make most of their money on advertising, and many web2 startups build their customer base using advertising.