July 11, 2011
+1 is not sharing (yet)
Mashable, Business Insider and all the others report that the +1 is more widely spread than the Twitter share button. While I doubt that this really is the case, they all seem to forget that when you click +1, nothing happens unless your friends search for something and see your +1 in their search results (or see your +1 tab in your Google profile). It is far away from being a "sharing" button, at least for now (a more detailed view of this - in German - here).