...
For example what chance do you give for Shining's 'ghoul' tours to convince a really dyed in the wool sceptic of the inherent near impossibility of Madeleine's parents or friends disposing of her remains in any of the ways he suggests they may have? I would say none at all.
The people I meet for tours are people who have a good knowledge of the case. As such, most if not all have formed a view as to what happened, and a tour or a conversation exchange is not likely to change their viewpoint.
What I gain from it is a rapid introduction to a great many things I was not aware of. I basically started from scratch around June 2014, so compared to most of the knowledgeable bunch, I have years of catching up to do.
I read Textusa for quite a while. Not because I believed Textusa's theory, because I do not believe it is correct, but because Textusa was highlighting parts of the puzzle that are important. When I got up to speed a bit, I was getting less from Textusa, so I gave up on that as an information source.
I was out and about in Luz today and a comment earlier in this thread about the locals stringing me up on one of the 'STOP McCann Circus' prompted me to have a check on a few Stop signs. I checked some, but I couldn't bothered to check all.
Those that I checked have all had the 'McCann Circus' part painted over. You can just see it faintly, but you have to know what you are looking for. To all intents and purposes, they are just STOP signs again.
This is an insignificant example of information exchange. If the poster hadn't mentioned the STOP McCann Circus bit, I would not have checked, and would not have updated the forum. You now have a tiny fragment of information that is unlikely to enter the media and is unlikely to pop up on any other forum.
And, of course, it is not going to affect one's view of what happened to Madeleine one iota.