I took a little time out today to watch WWDC Session 511 to learn about how Safari Content Blocking will work in iOS 9 and OS X El Capitan. After an hour, I had a little concept app running. I wont really explain the technical details of how the extensions work or how to create them, that is better done by watching the WWDC Session video directly, but I will say its frightfully easy and the code I used for the blocker detailed below is at the bottom of this page.

Ok, so the website I decided to try "fixing", is one that I see linked often, iMore. Let me start this by saying I really like the content that iMore provide and enjoy the personas of their staff on their many podcasts (Debug is one of my favourites!), but I hate the experience of their mobile website as it has several ad's by many different providers, all tracking me across all different sites. 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...



Looks

Here is a screenshot of before & after the content blocker has run.