Robert_Charlton - 10:40 pm on Oct 27, 2012 (gmt 0)
I don't know about Joe Public, but I've learned that these intrusive ads pop up if I accidentally mouse over them, and they are hard to shake off. I simply bail from the site... and I try to avoid pages where I see the tell-tale double-underlines.
I am always fretting about how these underlined links (doubled underlined at that) might cause some people to just leave the site without reading.
If I've seen that there are alternative pages in the serp, I do leave without reading. I hate these things almost more than pop-unders. I can't believe that any user-sensitive site owner would use them.