This news, via ReadWriteWeb.com, claims that “Twitter grew at a rapid pace, peaking at a growth rate of 13% in March 2009”, but has since declined to 3.5% currently. But “18% of all Twitter users have more than 100 followers… Just six months ago, the average user was just following around 40 accounts.” So, what does all this mean? Saturation? Twitter’s improved their spam control? Existing twitter users are taking better advantage of the service?