aristotle - 3:44 pm on Jul 9, 2011 (gmt 0)
No other site in this industry has implemented +1 and there has been no ranking increase as of yet.
Do you mean that your site's rankings should improve because it has a +1 button and its competitors don't?
I wonder how the rankings improvement is calculated in a case like this.
Since the competing sites don't have the +1 button, Google doesn't have any +1 data from them to compare with your site, so how does the algorithm determine how much rankings improvement your site should get?