New research out of Yahoo shows that the top 20,000 Twitter users get 50% of the tweet impressions (the number of people who see each individual tweet). Since Twitter has about 200 million users, that means 0.01% of Twitter users have 50% of the tweet wealth (yes, I just made up that term).
Now compare this to income inequality in the U.S. where the top 1% control 42.7% of the financial wealth.
That means that Tweet wealth is over 100x more concentrated than financial wealth. That is staggering.
I don't know exactly what this means yet, but in a world where attention increasingly matters more than money, we've got a very big problem.