I just came to the Board to read a thread and it happened again to me, several times. The origin appears to be google.com-win-a-prize-from-am (Can't see the rest after am). I was using my iPad. This is only happening on the Quilting Board. I can't even read anything for more than a minute or so and then it appears again and I can't back click out of it. I am on a laptop now to post this message. I have to do what Trapunta said, leave the site right away because it just keeps happening.