My Firefox usage has always been a bit excessive. I used to open windows to group my different tasks. Then Panorama came along and I started using groups. Then I had too many groups so I started opening new windows. Luckily I set
max_concurrent_tabs to 0 so I avoid loading all of those pages at startup (it’s that BarTab-like thing).
My curiosity got the better of me so I wrote a little script to tell me some facts about my usage. There are extensions that do some or all of this, but I didn’t actually want to install anything, I just wanted a quick snapshot of what was up. (That said I might turn it into an about:something sort of extension.) You can see what it tells you - it’s not much but it told me what I wanted to know. My usage was higher earlier today, and I’m sure there are people who are much more abusive of Firefox, so no judging.
Judging me on coding style? I would be. I started writing this in the error console, so I left out whitespace and used shitty variable names. Then it grew up and got all awkward.