Got the Buzz about Google Buzz?

Google and Gmail have gotten into the social scene with Google buzz. Have you seen the little icon that looks like the children's handheld game Simon Says? One more vehicle to learn how to use so that you can reply, favorite or forward an article you enjoy.
I read all about Google Buzz over at the social media guru site Mashable and now he provides instructions for adding Google Buzz to your WordPress site.
Question – when you see a post you like – beside retweeting it – do you click on all of the other sites like Digg, Stumble Upon, etc? Do you have a favorite? Is all this social media competition overkill?
If you had to choose one social site – which would it be?
I pick LinkedIn.