Yahoo offered to buy Facebook for a billion dollars, which was a significant turning point for the company, as it forced us to evaluate our future and the potential impact of what we were building.

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.

Dustin and I ultimately decided to reject Yahoo's offer, believing we could connect with more than just the 10 million users in schools and create something truly successful.

The decision to reject the offer was stressful, as many believed we should sell the company, and I realized I hadn't effectively communicated our mission to the team. Turning down Yahoo's billion dollar offer was painful because it led to a significant loss of trust within the company, resulting in many employees leaving due to a lack of belief in our vision.

After declining the offer, I felt fortunate that my belief in our direction paid off quickly, as we launched Newsfeed shortly after, which became one of the most used products globally.

Since turning down the offer, I've faced much harder decisions that required betting on the company's direction or investing billions, where the outcomes weren't clear for many years.

After rejecting the offer, I focused on hiring people who were committed to the long-term vision of the company.