Google +1 and Rankings
If someone still believe that Google +1s or Shares have a big impact on rankings I can show you and example of 3 pages:
1 - One with 328K +1
2 - One with 14K +1
3 - One with 1K +1
Do you know which one rank better for a very competitive term?
All the 3 URL are well optimized for that term under lots of perspective: topic, link, domain and all the stuff you know.
The winner is the number 3. A lot less +1 but a better ranking.