I have looked briefly at Google's own help and demo presentations about Google + (catchy name: a one character punctuation symbol. Google seems to have looked at the essential aspects of Facebook and taken the most important concepts (friends) and gone to the next level with what you want to do with friends (have conversations, find information (Google hasn't forgotten its claim to fame) share some information, have live video conversations, share pictures easily) as well as the most difficult aspects of Facebook (e.g., putting boundaries around groups of friends)
Over the next several days, I will post my reactions to various features of Google + as I learn about them.