I use it as much as I can, although for development tasks Chrome performs much better for me and certain sites load slower. I'm looking forward to a year from now when servo/quantum/whatever is in there. In the mean time though, I'm thankful to have a non-commercial party in the mix and am happy to use it.
Couldn't agree more, same here.
Not sure , currently with one tab open chrome is reporting about 1.4% and firefox about 4.8% . Same page opened on both .
I know one page that does something similar and that is google (front page and search results).
They are the biggest reason why I use an extension to stop or unload background tabs.
I thought that only rolled out to a small percent of users, and only users without extensions, and it's not even "per-thread tabs" but rather "one thread for UI, one thread for content."