Followers: 1.2 million
Sample tweet: "The ratio of paying to subscribers to active free subscribers of Spotify's music service is about 15 percent. http://t.co/D9TXQU8"
As the founder of seminal tech blog GigaOM, Om Malik knows a hot topic when he sees one. GigaOM's network has expanded to include specific sites catering to issues such as clean technology, open software resources and massive tech companies like Apple. If you want to stay on top of the latest news in the tech industry, this pundit's tweets are a must-read.