However, I see something like this and I wonder: "wow, Facebook is valued at over 10 times this purchase price (which is already inflated by virtue of it being a purchasing price)." I don't know what to draw from that; intuitively I see less value in Facebook, but I certainly haven't done an in-depth analysis.
That's the reasoning, whether you agree with it or not.
In contrast, National Semiconductor earned about $220 million in profits for approximately the same period: http://www.google.com/finance?client=ob&q=NYSE:NSM (not exactly the same months, because their Q1 goes from Dec-Feb, but still a useful point of comparison)
One can make the case that Facebook is overvalued, perhaps even grossly overvalued, but to say that it should be valued at less than National Semiconductor is a big stretch, even if you are very conservative and use only current bottom-line financials. In my experience, those who make such statements are not basing their opinion on fundamentals of the companies, but on an opinion that companies like National Semiconductor do "real" engineering as opposed to "frivolous" social networking sites like Facebook. It's discouraging to see such attitudes, but they are not new: both early internet companies (including ones that survived the bubble and turned out to be sound companies) as well as early PC-era companies were also derided as toys or fads.
So yes, a somewhat larger valuation for Facebook than National sounds reasonable. So, $6B -> $15B, $20B.
http://www.google.com/finance?q=National+Semiconductor&o...
But it sure as hell will be tomorrow look at that after hours!