According to Technorati, the number of blogs doubles about every 6 months with a total of 35.3 million blogs as of April 2006[ref].[17] This is an example of the early stages of logistic growth, where growth is approximately exponential, since blogs are a recent innovation. As the number of blogs approaches the number of possible producers (humans), saturation occurs, growth declines, and the number of blogs eventually stabilizes.