Some Columbia channel

Thanks to the people on this forum who prompted me that you can find where your video was used by googling the thumbnails of your video, I found that my video (After Effects template at that time) was used on some Columbia channel, as I see it. They even used it in their intro and they used the similar music from my preview. Nice :)
https://www.youtube.com/watch?v=eG80o7ZanpI
https://www.pond5.com/stock-footage/111090065/business-meeting.html

Googling thumbnails works all too well. I found many frames of my videos used as photographs on web pages (mainly Asian and Russian sites), so I realized that there's a bunch of people using video frames as photographs and I guess they didn't buy a video to use just one frame! I feel powerless.

Using video frames as photographs - hmm, unusual, never encountered it.