A 'just curious' question more than anything...
I only use the live.geekzone page and occasionally see "last reply by freitasm on date/timestamp" but there's no actual post by freitasm in the thread at that time.
There's a current example " last reply by freitasm on 16-Feb-2013 18:40" for the Class Action thread.
Is this a bug or some admin access thing being logged?