At that time, every buys a rabbit doll, always heavy in your arms, and it face to face to see for a long time.

Apparently, the use of Facebook Comments on blogs and websites is resulting in higher quality discussions, as well as the expected increase in traffic.

A sign of how important the project was to Facebook: Facebook's director of engineering, Andrew "Boz" Bosworth, said 15 engineers worked on the project for 15 months.