Adam D’Angelo helped to co-found Quora with Charlie Cheever in June of 2009.  Quora is a social question and answer website that D’Angelo and Cheever built using all the best aspects from similar apps and websites of the time.  Not long after the launch of the website, Charlie Cheever stepped down from his position and D’Angelo took full control of the website.  He soon started to implement blogging, statistical functions, and other quality of life updates to the website that made them stand out from the other question and answer websites of the time.  People seemed to really like the statistical functions that were added to the website because it allowed them to easily see how many people had seen their posts.  Also, for a while the website did not have any advertisements because D’Angelo did not think they were relevant to the user experience.

In recent years the website has gone downhill with data breaches that have caused people to have their information stolen, and the removal of quality-of-life functions that users of the website seemed to really enjoy such as anonymous posting.  Even with all these issues that Quora seems to currently have, I think D’Angelo is a good example of an entrepreneur because he took the knowledge and money, he got from working for Facebook and used it to build his own successful social media website.