It seems that my answer here was edited by "Community":
Read-only column in a SharePoint listRead-only column in a SharePoint list
I don't get the point of the edit, but that's not my main concern.
What I don't understand is why this account is editing posts in the first place. The account's mission is explained here:
http://sharepoint.stackexchange.com/users/-1/communityhttps://sharepoint.stackexchange.com/users/-1/community