1. Are you in favour of promoted tweets? Debate Twitter's decision to implement this model. Entrepreneurs have effective new promotion tools thanks to social media sites. But what about the entrepreneurs who created these new information highways?

Biz Stone, Jack Dorsey, and Evan Williams created and launched Twitter, the micro-blogging site, in 2006. Before Twitter, Biz Stone helped launch Blogger, Odeo, Obvious, and Xanga. He is a blogging expert who has written two books on the subject. Jack Dorsey is the inventor on the software side of the business and Evan Williams is an entrepreneur who also built internet start-ups like Pyra Labs. A good team, a good idea, and a lot of entrepreneurial spirit, and the next thing you know "tweet" and "re-tweet'' are part of our everyday lexicon