In my search for people residing in a particular block of homes, I found People Finders to be not always accurate in its addresses, phone numbers, and emails. When I finally located people, the numbers and emails were frequently different from those listed, and there were many people I could not locate at all.
I am also dissatisfied with their billing practices. They have a come-on of 95 cents, but if you do not cancel within 3 days you are automatically charged $24.95. (I cancelled within 6 days, thinking that the limit was 7, as with similar services.) I have found other person locators to be much more up-front and much less costly. I will never use PeopleFinders again.