Intellius (a search agency), after it completes your requested search, forwards your credit card info to ValMax which proceeds to bill your credit card $19.95 per month for absolutely no services whatsoever.
Internet research indicates that ValMax shares some, if not all, of its revenue with Intelius.
The scam succeeds because some of us don't check our monthly credit card statements carefully enough. If you do catch the fraud and complain to ValMax, they will quickly refund your latest charge. The beauty of this is that they APPEAR to be responsive to complaints, yet there are enough people who don't catch the fraud or who don't complain, to make this a very lucrative scam.