Dropbox Referral Program is one of the most talked-about referral programs on the Internet. MIT students Drew Houston and Arash Ferdowsi founded Dropbox in 2007. The cloud-based file storage and sharing service had built up a good early fan base within a year, concentrated primarily among the tech-savvy community centered in Silicon Valley. However, they were not able to break out beyond the tech-elite. The founders wanted to grow faster as the competition was fierce. One sta