What does that do?
Total time logged in: 110 days, 8 hours and 19 minutes.
AND U?
As of now
Total time logged in: is just for our Information/Reference, it's not even public so only you can view it.
Also, this has nothing to do with your Rank or Trust Level, i mean it doesn't affect it in anyway even if you have a lower count or higher count of time.
So if some user might be thinking of increasing the "Total time logged in" by staying online on the forum for more amount of time and doing nothing would be as good as that user is wasting his valuable time with no outcome.
So basically the user should use the forum to browse through the Topics/Posts and contribute something if they find anything appropriate and then they can exit from the forum for the day.
Just keeping an account idle on this website won't give any output as of now.
May-be in future that count could be used to give out something fruitful to us, let's wait and see.. but as of now, it's just indicative..