I use the 'Containerise' plugin along with the following configuration (which I am constantly tweaking) to keep the big tech companies isolated from each other and the rest of the web.<p><a href="https://addons.mozilla.org/en-US/firefox/addon/containerise/" rel="nofollow">https://addons.mozilla.org/en-US/firefox/addon/containerise/</a><p>I'm also increasingly using it to keep their various properties isolated from each other (eg. keeping Bing separate from the rest of Microsoft) to reduce tracking even further.<p><pre><code> !*.atlassian.net , Atlassian
!*.bing.com , Microsoft Bing
!*.bitbucket.org , Atlassian
!*.github.com , Github
!*.google.com , Google
!*.imdb.com , Amazon Home/Personal
!*.linkedin.com , Microsoft LinkedIn
!*.live.com , Microsoft
!*.microsoft.com , Microsoft
!*.nytimes.com , New York Times
!*.reddit.com , Reddit
!*.twitter.com , Twitter
!*.youtube.com , Google
amazon.com , Amazon Home/Personal
console.aws.amazon.com , Amazon AWS
music.amazon.com , Amazon Home/Personal
news.ycombinator.com , Hacker News
smile.amazon.com , Amazon Home/Personal
www.amazon.com , Amazon Home/Personal
</code></pre>
You get the idea. Really powerful.