Does Facebook automatically show on my profile websites that I've visited or is there an specific app?

[Exrain]

It's been quite a while since there was an update to Facebook that allowed users to display their "read" articles and many websites. With the introduction of the new biography profile and several other features I've lost track of what's new but I think the question title speaks for itself.

I've seen several updates that show "X friend read an article at Yahoo!". Does this require a special app or can it show itself? (other than accidentally clicking "Like").