i feel that 44% gain is not sustainable, given that it relied heavily on their new policy of inserting ads in the News Feed (so they look like posts from friends).
how many users like that "feature?" not this one, nor many others based on the general feedback i've seen about it.
plus, the ads are targeted based on marketing data. meaning, you browse for camping equipment on amazon, then load your FB page 10 minutes later and see ads for the equipment you were just browsing.
that's creepy, and, imo, will freak people out, especially amid the current NSA snooping anxiety.
that said, FB, like AAPL, is a hype brand stock, so it will rise based on rose-glasses emotions, and probably not truly crash until the bubble gets popped.
see also, YHOO trading at $400, with analyst targets of $600-700, before the dotcom bubble popped, and YHOO settled in the single digits for a while.