TechCrunch: Engadget Knocks $4 billion off Apple Market Cap on Bogus iPhone email. Verdict -- someone is getting into serious trouble. Just a side note -- it is actually not hard to understand why public companies do not like their employees blogging, especially when it is (1) not moderated (2) talking about work. While small private companies can enjoy all the benefits of blogging -- being open, communicative and up-front -- there is probably no such privilege if your shares are traded on public market. A slip of lips might knock off a painful chunk from the market cap.