Google for past some time has been experimenting of integration of its Google+ button across its products and services. First up, a few days back, I notice a "Plus One" button on a Google AdWords ad -- which appear, if your are logged in to your Google+ account.
Upon clicking the button, Google lets you share it across your network. (Note; I am searching my archive for the picture as it seems gone)
In another test, Google placed a new "Share" link option in the search results pages next to the URL. Upon hitting the button, users are prompted to share directly to Google+ from the results pages. The result is included as a link and users are given the ability to add a comment:
Surprisingly, users can share pages that they haven't yet clicked through. Currently users can only +1 a listing from the results page, something that is a much weaker sharing signal.
Google today made it official announcing the rolling out of the new Share link replacing the +1 button on its search results page. Google said,
Starting today, "we're rolling out a new experiment to show a Share link in Google search in place of the +1 button, making it easier for you to share a great website with your friends. Now when you click the Share link next to a result, you can add a comment about why you found it useful. You can then choose if you want to share it publicly or just to your Circles and it will post to your Google+ stream, making it easier for you to share directly from the search results page. This will appear for those searching in English," Google's Sean Liu posted.
(photo credit @BerianReed)
Also, Google just added a new "Download latest links" tab in the Webmaster Tools that let you download all of your links discovered but do so sorted by date.
You can now download links from Google *sorted by date*. Nice. Look for "Download latest links" in console UI. Pass it on!-- Matt Cutts (@mattcutts) July 17, 2012
John Mueller, shared the following screen shot showing of the new button: