Ever posted a not-so-flattering picture to Instagram during a drunken evening on the town? Or fired off a passive aggressive tweet directed at a former lover? Or maybe accidentally typed a crush's name into what you thought was Facebook's search bar and alerted the world that "Larry Finkelstein" is on your mind? Well, you're not alone.

According to a new study from Retrevo, 35% of Americans have posted something online that they later regretted. This particular study, inspired by the misdoings of Rep. Anthony Weiner, is part of an ongoing survey from the consumer electronics shopping and review site Retrevo.com. It was administered in June 2011 to a group of 1,000 people from all age and income brackets across the U.S.

Younger folks were more likely to mourn past posts, with 54% of respondents under 25 saying that they regretted something they shared online — as compared to 32% of those over age 25.

Still the consequences appear to be less than dire. Of those that have regrets, 11% say that the posts caused no issues, and 15% say they were able to remove the regretful posting. Three percent said a post ruined a relationship or a marriage, and 6% reported problems at home or work.

Not surprisingly, the study found that smartphone users are more than twice as likely to mispost, with iPhone users coming in as the biggest offenders: 51% of those surveyed with iPhones have posted something they wish they hadn't (Android and Blackberry nearly tied at 43% and 45%, respectively).

At this juncture — especially going into the weekend — we're going to take the opportunity to remind you of a service that could be useful when it comes to avoiding poster's remorse: “The Social Media Sobriety Test.” Do with that what you will.

Photo courtesy of Flickr, Egan Snow