Growth Hacker
The term that evolved from SEO GURU... if you look up the actual people who dare calling themselves "growth hacker" publicly, you will find most of them are gimmicky snake oil salespeople who offer nothing crazy, fancy, or even new. There are some really famous and hyped lying salespeople like these around...
That Indian guy who emailed you 20 times about his growth hacking tactics and secrets and the classes and campaigns and material he tried to sell to you at a deep discount, that is a true scamster aka the "growth hacker", or better yet the good ole' SEO GURU.
Growth Hacker
A new, more aggressive and results driven approach to marketing. A growth hacker may employ a list of media and campaign models executing a list of simple tag lines or interactive marketing techniques. The hacker will pay attention to the results, tweaking the campaign to the exact audience or method until optimum results are reached. A growth hacker literally uses all possible combinations and learns from each trial. Similar to a scientist working on a new discovery.
Our company hired a growth hacker who uses several marketing techniques including Interactive Entertainment Marketing to test which products our customers prefer.