[tomkin]

It's important to understand that Facebook is incredibly large, and the fact that any software scaled with them to the point they are presently at, is a "on the shoulders of giants" situation that seems to actually be working well enough for them to become a billion dollar enterprise.

Also, the building of infrastructure that takes on scale that's not yet been required is somewhat inefficient. But it does beg the question: If Facebook is limited by its infrastructure, what responsibilities do they have to build software that continues to scale for future organizations?