This document provides information about the Russian search engine Yandex and the Russian online gambling market. It discusses that Yandex and Yandex Money have traditionally dominated payments in Russia, although PayPal's introduction of the Russian ruble could see growth. It also notes that land gambling is illegal in Russia, making online gambling the main option. The document includes statistics on Yandex's market share compared to other browsers in Russia and details Yandex's history of algorithm updates. It provides tips on optimizing for Yandex, including following their copy protection guidelines, focusing on theme-relevant internal and external links, and optimizing search snippets and social profiles.