This is the 1133rd most frequent Russian word.
вконтакте
"Vkontakte" is a Russian social networking platform similar to Facebook.
Here, 'вконтакте' is used as the name of a social media platform, VKontakte, showing possession or action within that platform.
Я добавил нового друга вконтакте.
I added a new friend on VKontakte.
In this sentence, 'вконтакте' refers to using the VKontakte platform as a means of communication.
Мы общались вконтакте весь вечер.
We chatted on VKontakte all evening.
The usage of 'вконтакте' here indicates the location where the video can be found or viewed, which is on the VKontakte platform.