Hey Guys, I know it is nothing new, but i need to say it. My tests of G +1, Facebook likes and tweets on my own sites confirmed to me that they works always for serp increase! I found that G +1 are enough to get social proof and serp increase, but for Bing and yahoo these are Facebook likes, logical i know. This trend will only grow and grow, so there is plenty of ways to make money and offer such great services! But problem is that there are not so many people offering it! I am using one of the best services in the market, but it is not enough. There still is very much space to create new services of G +1,FB likes, etc... Guys, just think about it, you can make lot of money selling "social proof". Every site/page need it to grow now. I see that almost all niches use social proof and google more reward sites which use it! Even if content is not the best! Post here what you think about social proof and maybe you want start business?