Ken,
They are working great for me on several of my websites. I will stop using them when they stop working.
Do a test. If you results are anything like most peoples you'll be sorry you didn't use them sooner.
Of course the more compelling the "offer" in the pop up the better the results.
Ron Ruiz
The Business Fastlane
101+ True (and Often Unusual) Stories of Who Is Making Money and How They Are Doing It!