It's a big news week for Facebook this week. First, the Wall Street Journal broke the story that Microsoft was discussing buying a small chunk of Facebook. It would be a minority stake of about 5%, valued at $300 million to $500 million. "But Microsoft must first outgun Google, which has also expressed strong interest in a Facebook stake," the Journal adds. On the downside for Facebook, New York Atty. Gen. Andrew Cuomo said his office "issued subpoenas to gather more information about the Palo Alto company's policies and procedures after an undercover investigation found that Facebook was slow to respond to complaints about sexual solicitations of underage users," the Los Angeles Times reports. Facebook said in a statement that Facebook took the attorney general's concerns "very seriously" and would work with him and other attorneys general, the Times added.