In terms of accidentally sent e-mails and Internet postings—the kinds that people wish they'd never clicked "send" on—we think this week's goof by Twitter CFO Anthony Noto takes the cake. On Monday, the 46-year-old finance veteran, who joined Twitter in July after years as CFO of the NFL and a managing director at Goldman Sachs, posted the following private-sounding message to his public Twitter account: "I still think we should buy them.