A while back I joined Facebook, mainly to see a friend's uploaded vacation pictures. I only log into my account about once a month. However, a conversation the other day sent me searching for familiar names from my past. Today I used the Friend Finder on Facebook to send an e-mail to a high school acquaintance.
My high school graduating class was huge (almost 800 students) and I didn't know most of the people. Consequently, I didn't recognize most of the names of fellow alumni on Facebook. However, one jumped out at me. Alice and I were in several of the same clubs. She joined the Peace Corps after college, and I lost track of her. According to her profile, she's now living in South Africa.
I sent her a quick e-mail asking how she was doing, and giving her a quick summary of what I've been up to. I felt weird hitting the "Send" button; what if she didn't WANT to reconnect with me? If she doesn't, I guess she'll just ignore my message. If she logs into her account as infrequently as I do, it could be months before I know!