Share what? The data. Google will start testing a new feature that will provide aggregated search data on consumers that will allow publishers to produce smarter content, maximize revenue and understand seasonal inventory. However, there is a catch. Google will use this new feature to push their products. In our eyes, this is really a war against Facebook as Google is all about the open-web whereas Facebook is app based.
Article Link: http://adage.com/article/digital/google-share/310732/