Both Larry and Jim have this service and would probably only give it up if something better came along. I would guess as long as there is a NTSC receiver in use. Judging from Jim's notes about set-top converters, this could be for some time. Safe title and safe action areas were invented to protect the worst-case receiver. It is something we have all learned to live with.
Computer monitors are under-scanned to show all the viewable information.
Or until the converters force the program to letterbox format. We have run across a daily newsletter that may be of interest to some of you. It is free. This is YOUR form or journal. If your company or organization has done something different or new in DTV, let us know.