If you've never heard of DontDateHimGirl.com, basically it's a place where you can search for men that are really bad eggs, according to other women, or write up your own warning to the world.
The application itself really isn't that much different from visiting the site. It shows recent articles about relationships and lets you search for men that have things written about them. I added the application to my profile to see what it was like, but as of now there's nothing that displays on my profile except for the word "Hello." (Which leads me to believe they aren't finished with it yet.) You have to click on the main applications page to access the application.
I don't see the usefulness of this application considering it's not really an application, but rather just a glorified link to the main site.
If the company did create something to display on a Facebook profile, what do you think it should be? Or do you think an application even works for a site like this?