Email, call, text them. I've started sending birthday cards to my close friends (whose birthdays I actually know) rather than simply writing a message on their

Email, call, text them. I've started sending birthday cards to my close friends (whose birthdays I actually know) rather than simply writing a message on their profile or shooting a quick text. I've found most really appreciate the card - it's interesting how birthday cards used to seem the 'easy' way to wish someone a happy birthday but now they appear to have more meaning.