12. Chris Messina
Co-founder of marketing agency Citizen Agency, formerly employed as an Open Source Advocate for Vidoop and an Open Web Advocate for Google, Messina now works for startup NeonMob. This is the man that introduced the hashtag to Twitter in 2007, before it became the key indicator of trending topics across the social website.
11. Padmasree Warrior
Sporting her amazing name, she is the CTO of Cisco and is passionate about helping women in the tech industry. An important name in tech and flying the flag for all women with an interest in the industry.
10. Chris Dixon
Dixon is an internet entrepreneur and investor. He is the co-founder and former CEO of Hunch, a website that aims to build a 'Taste Graph' of the entire internet, connecting people on the web with personalised recommendations. Follow him on Twitter and learn a lot.
9. Aaron Levie
Funny man, the go-to comedian for tech lovers. Somehow in between the tongue in cheek tweets on various tech topics, he manages to be the co-founder and CEO of box.com.
8. Jack Dorsey
Dorsey is the co-founder and co-creator of Twitter as well as the founder and CEO of Square, a mobile payments company. A big deal in the tech world and one to follow.
7. Reid Hoffman
The American entrepreneur and author is best known as the co-founder of social networking website LinkedIn. Follow him for short, insightful updates and retweets on technology and politics.