在「An hour with Safari Content Blocker in iOS 9」這邊提到了「An hour with Safari Content Blocker in iOS 9」這篇文章。
文章裡提到：
They have super tiny 'close' buttons that are near impossible to hit, they follow you as you scroll and there is a slow loading full page interstitial that loads on every page refresh. Urgh! Anyway...
在這兩張圖 (Before & After) 說明了很多效果：
而網頁讀取速度從 11 秒變成 2 秒...
蘋果在 WWDC 2015 上的說明則可以在「Safari Extensibility: Content Blocking and Shared Links」這邊看影片。