For one of my sites I have Google Alerts for a whole bunch of snippets from my pages to check for plagiarism.
I don't think I've ever had an alert for these snippets in video results. Today I've received email about results for over 100 snippets (in fact it may very well be all of them). Every email has a handful of video results none of which are more than remotely related to the snippet (and in most cases completely irrelevant). I've even checked the source of the pages.
This is a hobby site, and about as non-commercial a niche as you could find, so I doubt anybody is playing silly whatsits with links to try and get me banned or pushed down for these phrases.
What's going on?