How do you express your gratitude for the people in your life?

I look up my friends' birthdays on Facebook Then I wish them a happy birthday on their wall Ask them for their address If they give me an email, I go to gratefulness.org and send them an e-card If they give me their snail mail, I go to ineedtosendsomecards.com and send them a real birthday card What do you do to celebrate the people in your life?