Today I was checking some old channels I have and found some kind of clickable link on the description in one video I never added. Something like More from: thirdpartynetwork CLICKHERE. (I just wrote thirdpartynetwork not to mention its real name) It seem to promote one of those network that promises a higher earning than adsense. The video is not original content by the way. Is this some kind of hijack or placed by youtube on non original content videos?