Web 2.0 is about sharing, power of communities and law of big numbers. With the power of active, participating communities and members, a few brilliant web sites offer invaluable services to the masses, which couldn’t be made possible in the era of traditional media and publishing. Here are the websites that bring web 2.0 to life:

1. TechMeme: What is popular in tech right at the moment, in blogosphere. I am not talking about what Wired or NY Times says; rather what blogosphere is saying. TechMeme is the page 1 of tech news, well before they hit traditional media’s attention. [Sister site memeorandum makes the same thing for political blogosphere]
2. Digg: So many news on web, and who decides what is more significant than the other? Why not let the surfers do? Digg gives the power to users who dig in the news and report to the website, so that only the most significant news make it to the home page!
3. AmieStreet: Though not may seem very important right now, this web site (and its business model) may become the standard for digital music. Song publishers upload their songs and these songs are downloaded for free initially. As the popularity of a song goes up (i.e. # of downloads increases), its price starts to increase too. Therefore, community based free-market economy powers the infrastructure, and good bands start to make money eventually.
4. More to come…