A measure of tweeting activity; by extension, a measure of the cost of following someone on Twitter. According to Followcost.com:
“A person’s follow cost is calculated in terms of milliscobles, named after technology personality and prolific Twitterer Robert Scoble.
One milliscoble is defined as 1/1000th of the average daily Twitter status updates by Robert Scoble as of 10:09 CST September 25, 2008. At that time, Scoble had tweeted 14,319 times in 675 days, for an average tweets per day of 21.21. Thus, one milliscoble is defined as 0.02121 tweets per day.”