Or only use it in the Facebook App on your phone, but never log your browser in to it.
"Logging in" is completely broken on the internet - no argument, there.
> or specifically log out of Facebook when you're not using it
will probably not, because they set tracking cookies that remain even when you log out.
Complete speculation here, but if they're willing to do that, who's to say they don't link traffic from known IP addresses as well? It might be linked less strongly but in many cases could still be associated in some way. They track web browsing for non-users already anyway, so if they can connect that to existing users by IP I'd be fairly surprised if they didn't.
In order to prevent this, you have to block trackers in all your browsers and devices with Ghostery or similar tools.
For some strange reason, the same requirements do not apply to Google, and Twitter are currently being investigated.
Not if you log out of FB. Conveniently, the "Like" button tells you when you're logged in and the "(Not You?)" link allows you to log out of FB whenever you notice you're still logged in. Hmm, this gives me an idea for an indicator browser extension.
In line with other responses, I use a browser plugin that blocks all traffic to Facebook when I'm not on a facebook.com domain, and I exclusively sign in via incognito mode so the session is destroyed when I'm finished.
Only downside is when i click done actual useful advertising result on gsearch i get a 404 :)
i know your example is moot because google doesn't