Sally_Stitts - 4:47 am on Jul 1, 2011 (gmt 0)
... so quickly ...
Normally, I am a very late adapter.
But I caved today. I put it on several of my top pages.
I think it was the fantasized terror of potential dropping SERPs.
"She ... was left behind. Sad. If only she had added the code."
I am guessing that doing +1 may be the way to go.
On the other hand, it could become unusable (spam, manipulation, low acceptance, etc.)