Сотка лучших Web 2.0 сайтов по версии Webware.com. Почему решил запостить? Потому что сайты все известные, но не все похожи на Web 2.0. Не очень понятно, по какому принципу отбирались.

BrowsingFundamental Web access tools: Browsers, extensions, widgets, and security.

Communications

Person-to-person communications platforms: E-mail, chat, voice.

Community

Online gathering places and group-powered content.

Data

Tools for finding online info, and storing and sharing files.

Entertainment

Tools for taking time off: Games and contests.

Media

Places to consume and share videos, photos, and music.

Mobile

Products that make your mobile phone a Web 2.0 appliance.

Productivity and Commerce

Sites for getting things done and doing online business.

Publishing

Tools for producing your own site: Blogging and Web content services.

Reference

Fonts of knowledge–from history to movies to maps.

Стащил здесь: http://www.webware.com/html/ww/100.html