I can think of one reason...maybe he named it that himself.
IIRC, MM said that the bishop took their photos for them as a wedding gift. Maybe he is a photographer?
But it makes no sense that while looking at his wedding pix that the *advertiser censored* would pop up. Unless of course he was downloading the pix into his own download folder, which he himself had named TA. So he could put his *advertiser censored* pix there under someone elses name.
If it was a communal use computer, how would he know, surely noone uses their real name for downloading this kind of content unless he "found" it in TA's email account like JA kept "finding" all those messages to other women?