[argonaut]

As an early employee at a YC startup (early enough to go to YC events), I would like to throw in a word of caution: YC looks for strong founding teams. Meaning they look for founders who know each very well and who have worked together in the past (i.e. meaning 6+ months). Partnering with someone you have only known for a week is a negative signal for YC. The reason for this emphasis is that many YC startups have imploded during YC due to founder disputes.

I have also noticed a trend that many YC founding teams consist of 1)founders who were classmates in high school, 2)founders who were classmates in college, 3)founders who worked together at a previous company.