matrix_jan - 5:48 pm on Mar 10, 2013 (gmt 0)

<thinkingoutloud>
How come there is no facebook button then? Or is it that facebook is not a search engine? Then why is there a Tweet button? Probably to accompany the +1 button so that it won't be the only one down there...

Conclusion: Looks more like a promotion than a button that should ease the sharing process...
</thinkingoutloud>