People, please stop asking for the secret. There is no secret, he has just fooled all of you. Firstly, the keyword has no competition, if Google sees that your website is the only one in the world relevant to that word, your going to rank for it. Secondly, I am guessing you looked at your website several times, Google will look at your cookies and see that, giving you an option of a website they assume you like. Thirdly, you will rank high for a keyword for a couple of days after being indexed. Google does this for real time searching. They don't want to rank an article relevant to today next week.
Please untie your underwear and start browsing for some real SEO case studies.