I found Been Verified to be so useful and worth every cent (only $21 a month). I helped my high school 40th Reunion Committee find 350 students that they had lost track of (out of a class of 500). It took me a few days, but I had such a great time poring over records until at last I found THE person I was looking for. They give date of last confirmed address, phone numbers, emails and even all the old addresses and a map! Especially helpful for those women who have gotten married and changed their names (many times, ha ha). Highly recommended and easy to use.