Yandex is the largest search engine in Russia and develops a number of Internet-based services and products. Yandex offers owners of websites and blogs tools with which they can apply the functional services of Yandex in their projects. The site and documentation are in Russian.
The Blog Search API is a tool that lets integrate the Yandex Blog Search service on their site, whether it is a personal blog, forum or blogohosting. The API can index a personal blog or any blogs on any platform and perform a detailed search. It uses RESTful protocol and responses are formatted in XML or RSS.