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The service Yandex Wordstat is a very useful solution for all SEO optimizers, as it helps to define the statistics for specific keywords in the search Yandex.
This feature allows you to know the statistics of all the popular queries on the net regarding your preferences – exact occurrence of the word is not accurate, etc.

wordstat-all

You have several unique tools, such as selection queries by region, words, as well as their history and quantitative value.
All the basic functions of the service “Yandex” declared on the site, so you don’t have to understand its settings – just enter the “key” in the query box and see the number of queries per month (frequency).
Very useful utility can be considered as the list of queries, which is based on the history of what they were looking for people with similar keywords.
wordstat-photoshop

To help in the development of this service, and it is also much easier to copy and paste popular “keywords” will help the browser extension called Yandex Wordstat Helper.