- Peter Thiel was crucial for Mark Zuckerberg (Facebook)
- Ray Chambers for Jack Dorsey (Twitter)
- Ken Allard and investors Ben Horowitz for Dennis Crowley (Foursquare)
- Paul Graham and Partovi Brothersfor Drew Houston and Arash Ferdowsi (Dropbox founders)
- Adam D'Angelo for Kevin Systrom (Instagram)

See more of who mentored whom at

Answered 7 years ago

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