
Some of my friends have this issue as well.
Originally shared by Craig Froehle
S. Chris T. Hey, did you know that you currently have a feature turned on that tells other people what you +1? Yep. Here's what it looks like when other people (like me) see what you've plussed. Is that info you want to be sharing? If not, you might want to turn it off. Thanks.
p.s., And a warning to everyone else: You can disable sharing your +1s in your G+ settings: Click "Settings" in the left-hand menu and then set "Who can see your "+1s on posts" activity?" to "Only You"