I agree.
I gave the suggestion to the cool mod that it would be good to have it somewhere we could remember where to find it... that's where I suggested. I'm sure there are better ideas, but that one didn't require a forum software change.
It didn't seem to be very hard to add "Loose lips sink ships" to the posting screens after 9/11, so I doubt it would be hard to add a link labelled "Restricted sources list" under the "Source" box on the article posting page. The trouble is that newer posters have no idea such a list exists, much less where to find it. And even us oldies have a heck of a time finding it.