Problem on Facebook - possible hack

DO NOT CLICK ON A LINK IN YOUR NEWSFEED UNTIL YOU READ THIS.

Facebook News Feeds are getting taken over by a site that publishes, without warning, a story on your wall whenever you click the link in News Feed as "Will Slack likes (whatever you clicked)."

So, for example, I saw a friend from church camp on my news feed with a very non-church camp link "liked," which I clicked on, thinking that I had to be misunderstanding.

Nope, it then went up on my profile and he saw it on HIS newsfeed from me, as me liking it. Facebook needs to stop this ASAP.