Finally I got pissed-off enough to remove Flash from all my PCs. For a long, long time I resisted installing Flash, because all I had ever seen was annoying animated ads that bypassed my Adblock and Image-download restrictions through the use of Flash. Then, along came broadband, and a few things worth watching on YouTube and a couple of other places.
So having had Flash installed and enabled in my browsers for a couple of months, now, I have come full circle back to my original position: It is just not worth it. For the one or two worthwhile videos or whatever that I want to watch I can manually re-enable Flash. For the rest I say , "Away with You, Worthless Rubbish."