This is the single biggest change in Google search since its creation and as a small business owner, you need to keep your eye on this ball. It’s basically this: Google users can order their search results, delete search results, or add new listings. Other Google users can see what they’ve done and even read notes they’ve left behind. Why should you care? How is this going to effect your hard-won top rankings? How will SEO and web marketing practices change given the boom in social networking site usage? Round up your peeps and start flexing those social network muscles now or you could be lost in the dust.
Here are some articles that give you all the details and a few thoughts: