Is anyone familiar with internet programs such as Reputation.com?

Does anyone know anything about the programs that are out there that are designed to remove your personal information from the collective sites that have all your personal business to offer anyone who wants to look for it. (Mylife.com, reunion.com, classmates.com, etc) Do they work or even help? Are they worth the money? Do they only block your information from being found as long as you pay the site, or is it deleted permanently? I know there are several but since you have to pay for them, does anyone have any personal experience with them? After deleting my account on some I realized it only deleted my access not my information. Is there any better program that actually works to help eliminate some of our "footprints?" Thanks!