On the other hand, it's hard to work up sympathy for the woman in the story. Yes, she wasn't privy to behind-the-scenes details. But it sounds like she put less research into her $200K "investment" decision than she did with the last car she bought. The Atlantic may have left out the details of her late-night scouring of web pages for information, but as a proxy for retail investors in general it's probably accurate.
Here's the only thing a retail investor needs to know about IPOs: FB isn't the exception, it's the rule. Buy an IPO on opening day and the vast majority of the time you're going to lose money. Why? (And I wish I could bold and underline this.) Because the IPO isn't to make you money. Stay the hell away from them unless you know what you're doing. And you probably don't.
EDIT: maybe I'm mis-remembering, but didn't the problem of mobile users and ad revenue come out before the IPO day?