According to the data, if you have a Klout score between 75 and 80, the half-life of your tweets is 2 hours and 45 minutes. The half-life of a tweet jumps to 5 hours and 15 minutes for users with Klout scores between 80 and 85. That’s not too shabby when compared against the half-life of tweets for those with scores between 40 and 70. This sad group of folks, which includes yours truly, will find that their tweets reach the half-life point after just five minutes. So our tweets do get dispersed via retweets, as the second chart ilustrates, but they die off rather quickly.