73=. Alberto Nardelli, Entrepreneur and journalist

Co-founder of Tweetminster, an aggregation site that uses data to select the stories being read by the movers and shakers in British politics. Nardelli's feed, incidentally, does much of the same – swiftly jumping between politics, economics and politics with dozens of links to the day's stories, from fraud in the eurozone to youth unemployment in the UK. His following is small but highly influential.

Tweets as: @AlbertoNardelli Peer Index: 58 Authority: 55 Activity: 76 Audience: 65 Follows: 3,736 Followers: 9,156