[heycam]

There are minor benefits without ABP. For each page/iframe that is created, we can avoid running the CSS cascade (and share those data structures) for the UA style sheets. It's saves something like 100 KiB per document.

If other add-ons insert a common style sheet into all documents (it's plausible Stylish does something like this? though I've never checked) then we'll again be able to avoid running the cascade and having duplicate data structures for the cascade across different documents.

[iSnow]

I just wanted to take the time to thank you for fixing that bug. Since I keep dozens of tabs open all the time, the memory consumption of FF has caused me a lot of pain (the browser gets really slow if it crosses 2.5GB real RAM consumption).

So, you just made my life better, thanks :)

[heycam]

Cheers!