Even as Facebook revealed some new chat products on Wednesday, the elephant in the room was Google's latest attempt to create a social network, Google+. Mark Zuckerberg tried deflect direct comparisons by saying, "Every app is going to be social." But he did make one remark, which suggested how he really feels about Google+ and one of its main features, Circles. Zuckerberg didn't mention Circles specifically but he did state: The definition of groups is . . . everyone inside the group knows who else is in the group