Plus.scriptrr.com is a tool to generate plugin/widget for Google + Activity Feed. Plus.scriptrr.com free, it does not require your personal information. Plus.scriptrr.com is third party product for widgets.
Google+, is a social network operated by Google, Inc., launched on June 28th, 2011 with integrations across a number of Google products, including Buzz and Profiles.
Download and info: http://wordpress.org/extend/plugins/scriptrr-google-activity-feed-widget/