The Google Friend Connect integration also brings the OpenSocial API to Blogger -- not just the Gadgets APIs, which Blogger has had for a while, but also the social APIs. Let's see how the Friend Connect demo gadget (which calls the OpenSocial APIs) works within this blog post:
In Friend Connect, the followers of this blog show up as "friends" of the OWNER, which is the blog (Abstractioneer). I show up as an administrator of the site, as does the Blogger service. And, my friends-on-Abstractioneer show up as my friends when I sign in.
(It's amusing how social Blogger is becoming -- not only is a blog your friend, Blogger itself is helping to manage your friend's affairs.)