helenp - 1:11 pm on May 30, 2013 (gmt 0)
If they will announce +1 as ranking factor the next day most webmasters will add the button to their site. Everyone wants to rank in Google, even if they don't like the button or Google+.
Thats not my point of view,
I am wondering if the google+ button may harm you if you have 0 or very few likes and if it could favour you if many.
If you have 0 likes maybe better to not have any....
No button could be neutral state = no information = does no impact on serp, no negative or positive.