Once I'm logged into the ask ubuntu site, it seems there is no way to logoff short of exiting my browser. If it is indeed possible to log off, I'd sure like to know how.
See https://meta.stackexchange.com/questions/222556/how-to-log-out-of-a-stack-exchange-site for the step-by-step video.
- Look in the top bar, right-most icon ("A list of all 176 Stack Exchange Sites"). It's in there.