# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2012-01-07 20:14:53 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/155744234845114369) RT @raffi: facebook's timeline architecture - "Three 'data archeologists' wrote the conversion rules." → http://t.co/rk9btS2E