The point is (1) Is all this stuff true? How true? (2) Is it really all good? Seems like they have a very free wheeling engineering culture. Are there downsides to this? Is it sustainable as Facebook grows? From what I've heard Google is considerably more controlled.

Also I must say that as a daily Facebook user I haven't noticed most of these "thousands" of features being launched. They must be exceedingly subtle features or else they bundle them up for an annual release (which is actually a good idea).