I think he started to tell about bitcoin to his friends and people around him, and in that way more people started to become aware from this technology.
thats possible, then people saw that the whole idea and bitcoin is nearly perfect so they decided to use it as often as possible and now it gets popular at a very rapid pace
Almost every second person in the world likes to earn extra money by spending a little extra time for it, and bitcoin gives them the opportunity to do that as there are various methods that lets anyone earn bitcoin as a starter and that is the reason why user database of bitcoin is increasing rapidly.
