The following command can be handy for one-off sessions. It won't interfere with your already-running instance of Firefox and uses a random profile in /tmp (which you can still monkey with if needed).

  firefox -no-remote -profile $(mktemp -d)

Interesting idea. I should give Firefox another try.

(I'm also using Fluid for self-contained Facebook browsing, I suppose that would then become unnecessary).

If you use Chrome, none of the steps you listed matter as far as protecting yourself from Google. I used to use Chrome until it really struck home with me what the incentives are for the world's biggest web advertising company to own the world's most popular web browser in a world where over-the-wire auto-updates are commonplace.

yeah, it's a pity, I hear Chrome is a good browser, but since it's from Google, there's just no way I'd touch it.

There's Chromium (ungoogled Chrome, or rather the other way around I think?) and Chromium-based forks. E.g. Brave is pretty good.

There is a separate Facebook Container extension if you only need to contain FB browsing (that's basically a single container extension)

Firefox is great on desktop, but I've found it too slow and clumsy on mobile, sadly.

Opposite for me. I use Chromium on Desktop and Firefox on mobile. Firefox Focus for everyday's browsing, and Firefox Mobile for long term sessions (I have 200 opened tabs of hacker new on Firefox Mobile, it's ridiculous)

Plus, Adblock extensions on Firefox Mobile work great.

But with the ad-blocker installed, you get a bonus speed boost that doesn't apply to the other browsers...

That's why I use Brave on mobile.

I like Bromite on Android.

try Firefox Quantum in the phone. it's super slick and I've really been digging it. the workflow is the for everyone but because it supports 1pass filling the constant clear doesn't feel that bad

whoops, Firefox Focus