I honestly don't know... and it's worse than that because I've got a backlog.
I take so many I can't post them all in any one set of postings, even when I post to all the forums and UT facebook groups I'm a member of in 1 day.
After I take them I go through the systems folder and delete the ones that didn't turn out okay or I don't like, so when I take new ones they go in the blank slots; UT only holds 255 screenshots before it stops making new ones. Then I transfer them to a different folder, which in its sub-directories I move them around until everything evens up. This organizes my shots randomly, as newer ones fill the missing slots leftover from previous sortings.