I recently posted a comment on this question: Why doesn't S.H.I.E.L.D. put Hulk on the index and lock him away? that included a link to some information about what the OP was asking. I did not write an answer because the information in my comment did not meet the specific restrictions that the OP requested but I felt that the information would still be of interest.
I realize that extended discussions will get deleted and answers in the comments will be deleted but this deletion seems to extend the scope of comment deletion.
Are comments no longer permitted for anything other than question clarification?