On the Web: 7 Things You Should Know About Google +1

2. +1 will be enabled on all pay-per-click ads. Again, users need to be logged into their Google account to see and/or click the +1 button. If people in your network have clicked the +1 button, their recommendations will show up at the bottom of the ad. If nobody in your network has clicked on the +1 but a lot of people in general have, Google will show you that the page is popular. But as with all things Google, this is subject to change. The roll out of +1s won't change PPC rankings. You're able to opt out of the +1 program if you'd prefer not to participate. Clicks on the +1 button don't count as paid clicks. Allegedly, there will be reporting on your ads that are getting the most +1 clicks.