This is the 10541st most frequent Russian word.
вк
"ВК" is an abbreviation for "ВКонтакте," meaning "InContact," a Russian social networking service.
In this sentence, 'в ВК' refers to the social media platform VKontakte, commonly abbreviated as VK.
Напиши мне в ВК, если будут вопросы.
Text me on VK if you have questions.
Here, 'в ВК' again refers to the VKontakte platform, indicating the action of uploading content.
Это видео было загружено в ВК вчера.
This video was uploaded to VK yesterday.
In this context, 'в ВК' describes the platform used for communication.