Block unnecessary iframes #35
Description
We should really check all the iframes on the page in greater detail as 99% of all ads are in iframes (and 90% of iframes contain ads).
For now I haven't found any visible ads that could be blocked by this. However, there are often iframes at the end of the body marked as ad by chrome devtools and they are using up RAM + CPU (I think they just help operate the ads in the main page) so removing them will reduce RAM consumption of the websites (I have found one website that uses 600MB of RAM!!)