Yandex Announces Partnership with Twitter

Moscow, February 21, 2012. Yandex (NASDAQ: YNDX) announced today a partnership agreement with Twitter Inc. The microblogging service will license the full feed of all public tweets – a ‘firehose’ of data – to Yandex’s search engine. New tweets will now become available in Yandex's Blog Search results in a matter of moments.

In addition to Yandex’s Blog Search, users who search for something on Twitter will also find the same results via twitter.yandex.ru. Tweets of over two million users are available for search on Yandex. Twitter posts of those users who tweet in Russian, Ukrainian, Belarusian or Kazakh, as well as top feeds in any other language, will be included in Yandex's Blog Search results.

Yandex search for Twitter, just like any other Yandex search engine, is word-form sensitive and corrects typos. The system's users can search by username or by hashtag.

"With more than 250 million tweets a day, Twitter is a valuable information source and the fastest way to find out what's happening in your world," said April Underwood, Twitter Director of Business Development. "Through this partnership, Yandex and Twitter will work together to make it easier for Yandex users in Russia and elsewhere to find real-time content about the people and things they care about most."

“We are currently concentrating on social networking search. This partnership with Twitter reinforces our effort in this area,” says Anton Pavlov, Yandex’s Blog Search Manager. “People share news, exchange opinions and discuss all sorts of matters in real time all the time. This kind of information will help us enhance our search results.”

In addition to integrating Twitter feeds into its search results, Yandex has also updated its Blog Search API, a useful webmaster tool for creating services based on microblogging content.

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.

Forward-Looking Statements

This press release contains forward-looking statements that involve risks and uncertainties. These include statements regarding our partnership with Twitter and the number of tweets available for search on our search engine. Actual results may differ materially from the results predicted or implied by such statements, and our reported results should not be considered as an indication of future performance. The potential risks and uncertainties that could cause actual results to differ from the results predicted or implied by such statements include, among others, user preferences, competitive pressures, changes in the legal and regulatory environment, and technological developments, as well as those risks and uncertainties included under the captions “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Prospectus dated May 24, 2011, which is on file with the Securities and Exchange Commission and is available on our investor relations website athttp://company.yandex.com/investor_relations/sec_filing.xmland on the SEC website atwww.sec.gov. All information provided in this release is as of the date hereof, and Yandex undertakes no duty to update this information unless required by law.

Contact:
Media Relations
Vladimir Isaev, Ochir Mandzhikov
Phone: +7 495 739-7000
E-mail: pr@yandex-team.com