I will try and get a screen shot next time it happens. It's a floating type popup that stays within the borders of the browser. If I switch to a different tab (FireFox), it is gone, and returns when I go back to FT. I can hit the "No Thanks" to make it go away, or wait and it will go away after a bit. When I read a thread and then come back to the main forum page and refresh, it comes back. This happens 4-5 times each time I use a different one of my computers. I'm logged in the whole time, so it's not a login issue.

Cheers.