Every technological advance brings with it new vocabulary, very often by taking old words and supplying new meanings. The age of social media has given us friending and unfriending, following and unfollowing, and so forth. Now Google's foray into social networking, Google+, has introduced its own lingo: circles and hangouts, sparks and huddles. But with such a new system (Google+ is still in limited field trial), there's naturally some initial confusion over basic terminology.