i wish you happy birthday Everybody likes to receive recognition and praise on their birthday, whether they admit to it or not. It gives people a "warm fuzzy feeling" knowing that you remembered their birthday and actually took the time to celebrate it in some fashion, no matter how small. This can be as simple as a "Happy Birthday" and a pat on the back, or as complex, organized surprise birthday party bash.
One method of recognizing people on their birthdays is by sending out simple birthday wishes & sayings through the mail (or email), usually through a greeting card. The internet allows you to offer unique virtual greeting cards that include animations, music, and sometimes even interactive games. This is a great, effortless way to let someone know that you're thinking about them on their birthday.