 The News Feed feature was greeted with a lot of pushback and criticism, including some that was directed personally at Sanghvi.The criticism was dealt with through the introduction of new privacy controls in terms of what personal data would appear in friends' news feeds.These privacy controls were coded in a hectic 48-hour coding session by Sanghvi and other Facebook engineers including Chris Cox and Andrew Bosworth, and announced in a contrite blog post by Facebook's principal founder Mark Zuckerberg.