Adomas mentioned and posted a link to a Guy Kawasaki’s video, where he talks about how should you start your business, what pitfalls awaits you and on what things you should focus. Presentation is quite long, but it’s worth it :) . Guy Kawasaki started in jewellery business and worked for Apple twice as a (chef) evangelist. He is the guy who brought the concept of evangelist to IT business. Wikipedia defines evangelist as a person who “promotes the use of a particular product or technology through talks, articles, blogging, user demonstrations, recorded demonstrations, or the creation of sample projects“. Well, the definition is clear, but personally I don’t like it. I would rather agree with Jeff Atwood who defines term evangelist as a person who shares his excitement and enthusiasm with other people in an effective way. Or to put in short, evangelist is a sales person who shows others what cool stuff their company is doing.