It seems that since Google + launched, there's a "war" between two giants social network Facebook and Google +. It is indicated that the social network Google + has launched the site displays the battle between both of them named likevsplus.com , which is contains the "like" on the left side for Facebbok and "+1"on the right side for Google +.
As we've found Google + has also posted the status on their Facebook page that says "Let the battle begin! facebook like vs google plus one".
The Senior Vice President, Engineering Google +, Vic Gundotra has said about that link "I'm not asking you to vote. I'm just highlighting that there is some voting going on :-)"
Anyway, until this post is written Google + has 36K, while Facebook has 75K.