Web 2.0 has features that allow for more interaction between consumers and producers. I thought the example of Web 1.0 providing information about products in contrast to Web 2.0 allowing consumers to give ratings and leave feedback and testimonials to be interesting. I notice that I pay a lot of attention to the seller's ratings and customer feedback before purchasing items online from places like Amazon and Ebay.
Web 2.0 is also responsible for the platform that allows us to take online courses the way we do or interact with each other. I think back to early forms of texting, instant messaging talking over the internet (internet phone calls), and early versions of social networking like MySpace and realize that we truly have come a long way.