So, I was just wondering... - Google Friend Connect

I heard recently that Google was making some changes to Google Friend Connect. If I understand it correctly it is no longer available for non Blogger accounts. Now what? I really need to do some research because I keep seeing different ways to connect with followers and don't know what to use.  Should I have more than one? Here's a few that I've found while wandering through the blogosphere.

Linky
NetworkedBlogs
Google+
Facebook
Twitter
Goodreads

So, I was just wondering what are you using and how did you decide? Do you still have GFC?