Few months back, it was being said that Google Orkut is coping stuff from Facebook, now guess what? its time for facebook to get inspired (or say to copy) from the Google+ Circle. The Facebook engineers worked on the circle hack, though it doesn't have advanced design and features like Google+.
Making friend list on Facebook is little messy, i thing most of people doesn't have noticed this feature on Facebook. If you want to make a list, first go to 'friends page', than 'edit friends', 'create list' and something more.... its crucial to get that same thing like Google+ on Facebook.
Well on Google+ this all mess can be done on a single page just with little drag and drop, i know you people are champ in that.