yep it is the admin thing
but who knows, maybe I wrote them down
why do you want an explanation?
because lots of users complained that it's not possible to see older reps and they would like this to be changed
the response was (if I remember right) they are not lost, they just aren't displayed anymore after some forum update
now it seems to be the case that admins can see more than 15, so I'm actually pretty surprised why nobody of the technical staff has checked so far why it's displayed for admins, but not for users, and adjusted the settings for all users, based on the knowledge he has from admins' cp
or is it a premium privilege?