I've been using Google+ quite a bit lately and have come to the conclusion that it's just about everything Facebook and Twitter are combined plus Picassa, Youtube and Chat included. Because of circles you can follow people and they don't have to follow you back ala. Twitter. You can also post publically like a personal blog or Twitter and people can follow you. If you have something private to say you can post it just to the groups (cough.. circles) or individuals you want. It's both a public blog/notification service and private social networking combined!
However Google doesn't currently have a URL shortener so people can pass around user identities. Yes, you can put a link on your site but it won't be anything you'll put on a business card so a service called plus.to popped up and you can link a Nickname to your Google+ profile.
Here's mine if you want to follow my rants and inciteful thoughts there. I'll continue to post full articles and Howtos here but status updates and thoughts over there.
Thanks for your support..