Normally when you sign into Gmail, it signs into your whole Google account – YouTube, Gmail, Google Search, etc… Is it possible to sign into only Gmail and leave the others not logged in?
From a quick Google search, it doesn't look possible to change this in Google accounts settings. Is there, for example, a Firefox extension that would do the trick?
Best Answer
As far as I know, this is not possible. There could be a hack, but I am not aware of any method to accomplish this.
I would suggest using a separate browser session with the appropriate anonymity mode enabled (i.e. InPrivate, Private Browsing, Incognito mode) and make sure you untick the "keep me logged in" box and log out of the service after you're done. That will at least make sure your session isn't shared with other browser windows/sessions.
Obviously, you can still be tracked via IP and the like.