https://addons.mozilla.org/addon/weboptimizer/
https://chrome.google.com/webstore/detail/web-optimizer/cnhiehgbljjkkiibdfochmcffldemhph
https://microsoftedge.microsoft.com/addons/detail/web-optimizer/nidnebakmpakkpeolmfdfhdilpogjoim
（如扩张器、关闭器……）
（即使您使用代理或 VPN，WebRTC 也会泄露您的真实 IP 地址。）
（网站可以跟踪您的可见性。例如，他们可能会让您观看广告 60 秒，然后才允许您观看视频。如果您最小化浏览器或切换到其他选项卡，网站可以检测到并暂停倒计时。（这个特征概率不起作用。））
（告诉网站不要跟踪您。（它仍然可以））
(A third-party cookie is placed on a website by someone other than the owner (a third party) and collects user data for the third party. As with standard cookies, third-party cookies are placed so that a site can remember something about the user at a later time. Third-party cookies, however, are often set by advertising networks that a site may subscribe to in the hopes of driving up sales or page hits.)
