Eddy, The initial post was about 3 Macs that the person has for which a warning about an infection at bidr.trellian.com is popping up. So, you are incorrect: my post is precisely about the topic of this thread, as the same thing is happening on one of my Macs too. It seems you misread the initial post. If it should have been on a different board, you might mention it to the person who made the initial post. I'll await a response to the issue that has been raised.
I just got the pop-up again, for the second time today. It's at a different site almost every time, so I don't think the site to which I am browsing is the issue.