One thing I like so far is how easy and natural it is to sort friends into circles. I'm very aware Facebook has essentially the same functionality as I've been using it for almost as long as I've been using Facebook, but the difference lies in the way it's presented and how you interact with it. What I found to be a chore in Facebook is a natural part of adding friends in Google+. In Facebook I only had the patience to deal with two different groups, but in Google+ it's a breeze to maintain plenty of circles. I currently have the distinction between Friends and Acquaintances, between Online and Offline relations, one group for family, and I think I'm gonna make language-based circles as well (Swedish- and English-speaking). I only hope they'll add some way (unless there is one already that I haven't seen) to more easily overview all of your friends and what circles they belong to. Maybe even let me filter out for example [not:Online AND not:Offline] friends to see if I missed sorting someone into either group.