Friend Magnets

Quite some time ago I had a few postings about Roger Coghill, who sells magnets that are supposed to have various medicinal powers, spreads alarm about power lines, and offers a large prize for an experiment on a human infant, in his ethically alarming eponymous 'Challenge', a caper with no scientific merit. My mate Dave had one of those generically pointless correspondences with him, which are covered in the earlier postings. (And here.)

Dave now tells me that he's received a friend request, via Facebook, from one Roger Coghill. Torn between curiosity about what jollies might be found in the Dodger's status updates and posted items on the one hand, and lively aversion on the other, Dave asked Roger to 'jog his memory' since he couldn't seem to place him. I wonder what if anything will come in reply?

Anyway, here's the request: