achi

WP-Buzz is a plugin to put a post to your [Buzz] account everytime you publish a blog post. All you have to do is setup this plugin, enter your sitename,oauth_consumer_key,oauth_consumer_secret and your domain.

WP-Buzz

Send a post to your Google Buzz account everytime you publish a blog post.

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fabiancz

This plugin adds a set of cool icons and widgets at the end of your post for your readers to share. Widgets are Twitter, Facebook and Google +1. It supports large icons and small icons.
This plugin is copy of “simple-social-sharing-widgets-icons”, because it’s not updated;

Simple Social – Sharing Widgets & Icons Updated

Adds a set of cool icons and widgets at the end of your post for your readers to share.

WP-Buzz vs Simple Social – Sharing Widgets & Icons Updated