Apps have played a large part in Facebook's success. A lot of us geeks have a tendency to avoid them, however, since so many require unfettered access to data that we might want to keep private. As worldly Internet users, we also realize that we can actually leave Facebook.com and for other sites.

However, to a lot of people, Facebook is the Internet. They get their messages on Facebook, share and view photos, plan events, and play games by installing any number of the thousands of freely available Facebook apps. To them, it may not matter that all of these apps are scraping data; they just don't want to leave Facebook.

With features like Places, status updates, and friendship pages, Facebook has a bit of a creepy vibe on its own. There are also a fair share of apps that can make you, the Facebook user, appear to be even creepier.

So what makes an app creepy? That's somewhat subjective, but these are the apps that could make others uneasy or feel a little differently about you after finding out you use those particular apps.

You can easily find which apps you use after a few hundred clicks. Here's how to get there: Account > Privacy Settings > Apps and Websites > Apps you use > Edit Settings. Take a look at the slideshow to see if any of your apps made the list. If so, you may appear creepier to your Facebook friends than you thought.