A new feature within Twitter's Facebook app that lets users find who among their friends has a Twitter account has been put on ice by Facebook.

The feature would cull through Facebook contacts and compare the list of names to users on Twitter, offering up things like Twitter profile information and a link to follow.

Now, trying to use the app on the popular social network brings up a message that says, "It appears that the connection between Facebook and Twitter isn't working," and that "we are working with Facebook to resolve the problem."