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Those businessmen and website owners who want to enhance their online market presence in Runet segment and attract more Russian-speaking clients should pay much attention to the advertising on Yandex as it is the most popular search engine not only in the Russian Federation but also in such countries as Belarus, Ukraine, Moldova, Kazakhstan and other neighboring regions where the percentage of Internet queries in the Russian language is higher than in English.
The best way for Runet promotion is to find a professional Russian Internet marketing agency that knows all specifics of this kind of promotion as it differs from the promotion in Google and in other search engines mostly oriented at English-speaking audience. First of all, it requires longer time period to see results. Secondly, content optimization has a lot of specifics (any SEO agency Russia knows that this search engine does not like over-optimized content). The requirements towards the quality of links also differ from Google’s requirements. There are a lot of other differences (various ranking systems, tools, filters and algorithms, website “visibility” and geographical location factors, etc.), but the main thing is the fact that advertising on Yandex is not the same as on Google.  
It is obvious that is unwise to ignore such a huge market that offers so many opportunities for the business activity of any type. Therefore, it is necessary to find Russian Internet marketing agency that will help to orient in this business area and assist in the development of a complex promotional strategy. When choosing a company for further cooperation, try to find out how many projects it has already accomplished, whether they have been successful or not. Besides, it will be more effective if a SEO agency Russia also has experience in handling both local and international projects on advertising on Yandex.