Did Goldman increase the number of Facebook's users or add a new awesome feature? Did they address the privacy concerns of Facebook's users? Did they make Facebook experience better for the users? No, no and no.
All they did is increase the "perceived financial value" of the company, which as we know from not too long ago, is intangible and fleeting at best, and total BS at worst (Reminds me of the $100bn "valuation" that 37signals got http://37signals.com/svn/posts/1941-press-release-37signals-...)
As far as I am concerned, Goldman can do whatever it wants as long as its actions don't have negative effects on the rest of us. Internet bubble of 90's hurt many people, and so did mortgage bubble of late 2000s. I don't want Goldman to contribute to and profit from another one of those. How do we make sure it doesn't happen?