Thank You Messages: Once upon a time, you had to actually remember someone’s birthday, pick them up a greeting card, write some words in it by hand, and get it in the mail well before their big day. Nowadays, technology does practically all the work for you. You get a notification on the day of someone’s birthday through Facebook or your calendar app, and can instantly fire off a quick birthday wish. Check out our birthday section for unique thank you messages for birthday wishes of all k...