Due to interface reworkings, logging out become a bit more tedious now, not to mention it’s quite hidden for newbies (see eg. the closed topic “Logout missing”).
You may deliberately hide it to keep coders on site 
, but that’s not necessary; Your platform already a magnet…
I would suggest to
- simplify the current process (going to profile page > press SETTINGS > scroll down all the way (even on 1920*1200) > press LOG OUT); or
- at least move LOG OUT button to top on the SETTINGS window.