Just because you can share more online doesn't mean you always should.
A survey by Retrevo of 1000 online individuals found that nearly a third of all respondents (32%) admit having posted something online that they regretted.
Over half of people under 25 (54%) said they had experienced second-doubts about something they shared online, while just 27% of people over 25 said they had. Nearly two-thirds of iPhone users (59%) said they had "poster's remorse."
Among all users who said they had regrets about posting information about themselves on the web, 13% they were able to remove it, 3% said it "ruined my marriage or relationship with someone," and 6% said it caused them problems at home or at work.