Yandex MoiKrug API

MoiKrug, or "My Circle" in Russian, is the social network for Russia's biggest search engine, Yandex.ru. MoiKrug provides an API for developers to use to build applications that access MoiKrug user data and services. MoiKrug uses OAuth 2.0 to authenticate users, and returns information in JSON or XML formats. The API is currently in beta version.