I use the groups as my own personal filing cabinet ..
I place medical studies for easy access in case my PC .. fails ..
So each and every abstract DOES NOT .. I repeat .. does NOT .. need .. a comment .."
May I suggest you use one of the many abandoned groups and/or start your own, which you can do Tom without much problem. That way there would be no comment, which practice is the normal and usual practice; one which invites reaction by the act of putting it out there for others to consider. It is not a bully pulput from which to do one way lectures.
I use the groups as my own personal filing cabinet ..
I place medical studies for easy access in case my PC .. fails ..
I've done the same for years. A device you might want to try is: insert some alphanumeric into the posts that you want to be sure and recall. Say...at the bottom of the post put in the alphanumeric: 2.50673445
Then, years later when you Google search the NGs, merely use THAT as your keyword for retrieval.