Google is using its Google+ social network to create ads but not run them, the company announced on Monday.The "+Post" ads will run on Google Display Network, which includes 2 million sites. The ads look just like Google Plus posts but appear outside the network. For example, if you're in the market for a minivan, you might see a Toyota ad pop up on AutoTrader or another car enthusiast site. In that sense, the units behave much like Facebook's promoted posts. The Google+ ads don't include recommendations, though — only public posts from Google+ users. A comment from someone in one of your circle won't jump to the top, like one in Facebook's Sponsored Stories will do.