"Xyz (Logged in)" ... for example on the http://test.leuksman.com
This "(Logged in)" as such makes sense, but not, when it only means "user has not yet logged-out"
I propose to add a "decay time" let's say in the range of hours, and when this time has elapsed without the user coming back, the >>display status<< (Logged in) is dropped in Special:Listusers. Of course, this shall not mean, that the cookies for "login across sessions" are invalidated.
T.