Синяя социальная система управления закладками и публикациями.
Log in with your username.
Я забыл свой пароль.
Log in with your OpenID-Provider.
a service for tracking popular URLs people are sharing on Twitter as a way to identify trends, topics, and new and interesting tools and services. It's basically Techmeme or Google News for Twitter, but for all popular links shared in a given day.