The <x id="START_LINK"/>sharing system<x id="CLOSE_LINK"/> implies that some technical information about your system (such as a public IP address) can be sent to other peers, but greatly helps to reduce server load.
With <x id="START_TAG_STRONG"/>Do not list<x id="CLOSE_TAG_STRONG"/> or <x id="START_TAG_STRONG"/>Blur thumbnails<x id="CLOSE_TAG_STRONG"/>, a confirmation will be requested to watch the video.