With more and more of us joining different social networks, it’s sometimes hard to keep track of what information we share, where we share it and who can see it. Many of us don’t think twice about where we post or what we post, but maybe we should.

According to a new survey by Reppler, 91 percent of employers use social networking sites to screen prospective employees, which means you could run into trouble if you’ve misunderstood privacy settings (or ignored them, like many of us do). You could have even posted content that displays you in a negative light and not even know it.

On Tuesday, Reppler launched a new version of its social media monitoring service that helps users manage their online image across various social networks to make sure that everyone is aware of how they come across online. Reppler added some new social networks to its list of supported platforms — Twitter and LinkedIn, in addition to the already present Facebook. The service also includes social networks like Flickr and YouTube.

In a competitive job market, even something as small as your tone in a tweet could be off-putting to potential employers. Because of this, Reppler launched a new feature called the “Reppler Image Score.” This pulls information about your image across different social networks and rates your professionalism and consistency. Across my networks, my tweets were rated partly positive and my Facebook and LinkedIn were both rated as neutral, thus my rank was 80. The more positive your tone is across your networks, the higher your rank will be.

Tone isn’t the only thing employers are looking at when searching for candidates. Your social networks could be riddled with questionable content that you don’t even know about — mine certainly was. Reppler will scan your social networks and display any posts that show questionable words, so you can easily remove them. For me, flagged content was mainly comments my friends posted that included various curse words and the word “beer.” Reppler also gives you advice on how to raise your score, so you can clean up anything that might be questionable before submitting a job application.

If you want to give the service a try, visit Reppler’s website.

Reppler also compiled a cool infographic that outlines how employers use social networks to screen their potential employees. Check it out below and click on the image to view the full size.