I know we had the 'Online & Offline Status' before someone changed it. I liked it, I really want it back on. Anyway, you don't have to I just haven't posted a suggetsion/problem for a long long time. Junk
Its quite an essential feature back then actually, easier to keep track of a person besides needing to view his/her profile to know if they are online.
Look under your post stats - if a user is online it will say ON and if they are offline it will say OFF.