Annoyed of YouTube's music deletion in Germany, I started my own "YouTube clone" just for private use. It automatically downloads my subscriptions and some videos with special keywords or from special YouTubers. All of that works fine. And all of that is not accessible from the outside (you'd need a username and a password, which only I have).
On my start page, there are a lot of links to videos that are in my subscriptions, but aren't downloaded yet. When I click one of these links, I get that video included with the original YouTube embed feature. All of that works fine.
But now my problem: a few minutes ago I watched a video with that embed-thing and I just saw this in my Apache log:
188.8.131.52 - - [20/Dec/2014:21:40:52 +0100] "GET my_youtube_clone HTTP/1.1" 200 2780 "-" "Mediapartners-Google"
I already have all bots blocked via robots.txt, so obviously Google is using the YouTube referrers to crawl the pages and while it is doing that, it is ignoring the robots.txt.
Google didn't get anything useful from that, as I said, you'd need a password for that, but I am quite annoyed by Google ignoring the robots.txt and using the referrers of YouTube as crawl URL sources.
Is there any way to completely stop that?