Henry Blodget

First, we learned Facebook's IPO underwriters had cut their estimates for the company in the middle of the IPO roadshow. What we didn't know was why. Now we know. The analysts cut their estimates because a Facebook exec who knew the business was weak told them to.

At the kickoff roadshow lunch for Facebook's IPO this week, CEO Mark Zuckerberg showed up in a hoodie. This caused no end of Wall Street squawking about his alleged immaturity, and a backlash of squawking about pretentious analysts. So, who's right? Wall Street or Silicon Valley?

After Groupon's IPO release on Thursday and its bumpy first day of trading Friday, it's time for ordinary investors to think hard about whether we really want to take the plunge on the coupon company. DailyFinance offers a few expert opinions about whether this daily deal is a winner.

For more than a decade, some smart, successful investors have been telling me that Amazon.com (AMZN) would not succeed, because its business plan was flawed. Meanwhile, the company built its reputation as an online bookseller, added products, and boosted sales. During that time, Amazon's stock was...