<?xml encoding="utf-8" ?>現在我們來看什麼是 Growth Hacking ？來看Wikipedia上面的介紹：
Growth hacking is a marketing technique developed by technology startups which uses creativity, analytical thinking, and social metrics to sell products and gain exposure.[1][2] It can be seen as part of the online marketing ecosystem, as in many cases growth hackers are using techniques such as search engine optimization, website analytics, content marketing and A/B testing. Growth hackers focus on low-cost and innovative alternatives to traditional marketing, e.g. utilizing social media and viral marketing instead of buying advertising through more traditional media such as radio, newspaper, and television.[3] Growth hacking is particularly important for startups, as it allows for a "lean" launch that focuses on "growth first, budgets second."[4][5] Facebook, Twitter, LinkedIn, Airbnb and Dropbox are all companies that use growth hacking techniques.[6]
這裡有幾個重點詞彙：creativity, analytical thinking & social metrics。另外在方法上有：SEO, web analytics, A/B testing等。比起傳統的growth方法（比如投放在電視或者報紙上投放廣告）來說，growth hacker們更加專注於使用 低成本高數據化和創新性 的辦法。
說了這麼多理論的東西，難免枯燥；下面解釋 growth hacking 中的幾個要點，同時配上一些經典案例的分析：
