I recently used Facebook and MySpace to find a family member, age 25, that I had never met. Knowing his name and the state didn't help find a phone number. Then I realized that many people that age only use cell phones. I'd have to join Facebook and MySpace and search there. Actually, my dog Sunny joined! (At first she was rejected because of her tender age, but I had to fudge that.
Found the family member ASAP in January and he was just here visiting.
He used his MySpace page to show off friends and family photos while he was here.
Read the following post for more on networking.