Indeed. The wealth that Facebook creates is that it enhances social capital, and this move capitalizes on it brilliantly. They are so good in designing feature

Indeed. The wealth that Facebook creates is that it enhances social capital, and this move capitalizes on it brilliantly. They are so good in designing features that fit in the way their society works, I wonder what is their systematic approach to do so. Google can test features on small % of their users, Facebook can't do this because it doesn't really show how the feature will scale. Geeks with a design sense are valuable, perhaps geeks with social sense get even more valuable. But I don't believe they just have a group of social geniuses that understand technology there.