The same business owner also wanted some information on a system wide pop-up blocker that he could install. I did some research for him and the best popup blocker that I could find was from stopzilla. It is easy to install and incredibly efficient with a computers memory and system usage. The biggest concern for him was scalability and ability to have frequent updates. The company is known for its updates and I would recommend it to anyone looking for a good pop-up blocker.