I was afraid to click on anything within the message, especially since it didn't even say where it was coming from. Not that that necessarily would have meant anything anyway.
I ran Malwarebytes and found only two non-malware P(otentially) U(nwanted) P(rograms). We’ll find out if the FR site is infected when I preview, then press “Post” below. Here goes:
Well, yup. I think from this and reading the posts, it’s the whole site and not just one thread that is infected. When I chose “Ignore . . .” then another tab started to open up which earlier led to the “stopmalware” web site. I clicked the tab off before it completely loaded, and it went back to the page to which I’m relying. But across the top of the page there was a ribbon with two selections, one of which is “this is not a malware site” (If I recall correctly. Here it goes again:
This time the fake “warning sign” did not come up. Maybe that’s the end? Here I go again:
This is now OK, so far.