Mel, on your latest page, I am not sure what you were intending to say with this
"(The major consignors will not resell these bootlegs.)"
I think you maybe meant auctions instead of "consignors". In any event, you should revise it to reflect what you do mean.
On the Woodstock, I had not seen your page before. It seems you now agree that it is a more recent poster, as I said from the first time I saw it. You have my strong belief that it is definitely not a 1970 poster, plus MPA Grading agreeing, and on the other side you have the unsupported self-serving statement of the seller, plus the statements of those who bought them from that seller and want them to be "real".
I applaud your efforts, and you can do this hobby a ton of good (and possibly cause eBay to either these guys from selling fakes there, which would be almost inconceivable), but be very very careful to not make an error, or those you profile will seize on it in an attempt to discredit you.
Bruce