Trendy social media app Clubhouse is seeing an extraordinary surge of interest among Russians as it launched last week in the country.

The social network saw the audience for its audio-chat service increase 20-fold as big brands and top managers from major companies signed up. The former head of Russia’s financial regulators even appealed for Central Bank Governor Elvira Nabiullina to get involved. The amount of coverage Clubhouse received in Russia’s biggest media outlets increased every day.

The app has opened up a new way to reach influential individuals. Oleg Tinkov, founder of Tinkoff Bank, can be found roaming chat rooms, while other popular users include the entire top management of internet giant Yandex and the usually taciturn president of chess federation FIDE, Arkady Dvokovich.