SAN FRANCISCO, CA--(Marketwire - Feb 29, 2012) -

Core News Facts:

• Topsy Labs, the leading real-time search and analytics provider, today announced that Yandex, the largest search engine in Russia, has licensed access to Topsy's real-time relevance-ranked social media index to enable the integration of social search within Yandex's search results.
• Yandex recently announced a partnership with Twitter that provides Yandex with access to the full Twitter firehose of more than 250 million tweets per day.
• Topsy's proprietary fast indexing and live ranking enable Yandex to identify and extract fresh relevant results from social media sources such as Twitter.
• Topsy's indexing and ranking platform is also used by real-time search engine [ www.topsy.com ], as well as Topsy's social media analytics products.
• Topsy's search and analytics platform is the largest publicly searchable index of Twitter data, spanning over four years to 2008.

Quotes:
Yandex CTO & Co-founder, Ilya Segalovich
"With the continued explosive growth of data from the social web, the ability to integrate fresh relevant results from the social web into search is critical. Topsy is one of a few technology companies capable of indexing and ranking the massive amount of real-time information being generated from the social web."

Topsy CTO & Co-founder, Vipul Ved Prakash
"We are very excited to partner with Yandex. Our technology platform is designed specifically to ingest and rank real-time social data at massive web scale. It's a perfect complement to Yandex's already powerful search capabilities."

About Topsy Labs:
Topsy Labs is a realtime search and analytics platform powered by the social web. Every day, Topsy indexes, measures and live-ranks links, comments, pictures, videos and web pages from over a quarter billion social posts to bring consumers and businesses the freshest content and most valuable social web metrics. Headquartered in San Francisco and founded in 2006, Topsy is backed by BlueRun Ventures, Ignition Partners, Founders Fund and Scott Banister. For more information visit: [ www.topsylabs.com ].

About Yandex:
Yandex (NASDAQ: [ YNDX ]) is the leading internet company in Russia, operating the country's most popular search engine and most visited website. Yandex also operates in Ukraine, Kazakhstan, Belarus and Turkey. Yandex's mission is to answer any question internet users may have.