Why is Twitter so addictive and appealing? It seems the answer may be more scientific than one would have guessed. An experiment by an industrious blogger has found that sending a tweet increases oxytocin and decreases stress hormone levels in the brain. This is similar to the reaction a person has when being in love.
I would love to see this investigated on a larger scale. Is this guy an anomoly, or is this a common experience for tweeters? How does reading other tweets affect us? Are the effects magnified when someone replies to us? Are the thousands of tweets I've sent in the last year considered drug abuse?
Hop to it, NIH! Fund this essential research.