Mark Zuckerberg succeeded with Facebook not because he was an expert in startups, but because he understood his users very well.

Facebook's growth forecast was initially underestimated; they grew to over 2 billion users by being intentional about growth strategies.

The initial market for Facebook was just 10,000 people at Harvard, but it quickly gained a significant market share, demonstrating the potential of small markets.

Mark Zuckerberg exemplified this by constantly creating prototypes and sharing them with users, which contributed to the genesis of Facebook.

I advised Mark Zuckerberg about the importance of engaging with politicians, as my lack of political connections during Microsoft's success led to antitrust issues.

Facebook's growth was initially slow, taking a year to reach a million users, but this time allowed us to refine the product and ensure it met user needs effectively.

At the time of Yahoo's offer, Facebook had 10 million users, and it wasn't clear that we would succeed beyond that point, leading to intense discussions within the company about whether to sell or continue building.

The growth and user engagement on Facebook excited me, even though I wasn't a big user myself; the metrics showed it was gaining traction quickly.

Facebook was always profitable from its early days, which allowed Mark Zuckerberg to maintain significant ownership and control over the company.