Sites like Facebook and Twitter are more about extending your real
identity and relationships online. That's what makes them so addictive:
The little endorphin rushes from reconnecting with an old friend, the
ability to passively stay in touch with people you care about but don't
have the time to call everyday.
Facebook makes me a more considerate friend because I now remember
people's birthdays. Over Geni, I stay in touch with my niece who I used
to see once a year, but is now helping me map out our family tree.