By Gretchen Rubin

Every Wednesday is Tip Day, or List Day.
This Wednesday: 8 reasons why using Twitter can boost your happiness.

I’m a huge fan of Twitter, and I've tried to persuade several people to give it a try. (My greatest triumph: convincing my sister to use it. Seeing my sister in my Twitter feed -- that makes me very happy.)

We've all seen how Twitter can play an unprecedented role in world events and in news communication. But on a very personal, routine level, there are several (other) ways in which Twitter can boost your happiness. After all, is it just a coincidence that a blue bird is both the symbol for happiness and the symbol for Twitter? Probably yes, I know, but still, it's a happy coincidence.

1. Twitter allows you to pursue your passion – even if only in... More...