TOPSY search based on social influence has now indexed over 5 billion tweets

Topsy delivers realtime search powered by the social web that finds the most relevant conversations happening online has now indexed over 5 billion tweets and 2.5 billion links.

Topsy provides the “influential” search results ranked by millions of people. By searching links, tweets and other user generated content, Topsy brings you the freshest, most valuable content on the social web. Topsy is backed by BlueRun Ventures, Ignition Partners, Founders Fund and Scott Banister.