Facebook scammers are once again trying to pique your curiosity by using suggestive terms and promises of a "video." Just like with previous scams, they are leveraging Facebook with sensational headlines to target ignorant victims.
This version says something along the lines of "[Video] - This is what Happend to his Ex GirlFriend!" or "Look what he did after her Ex girlfriend posted on his wall" followed by a link and then a description like "Play Video! She could not walk properly for days!" or "lol What true pain both are having at this moment.?" According to Sophos, the link unsurprisingly wants you to spread the content (it tells you to "Jaa" it, which means "Share" in Finnish) to your Facebook friends and family.
The scammers' goal is to drive more traffic towards their online surveys by innocently asking you to verify your age. Some may believe they will see a sexual video at the end, but they won't. This is how the scammer earns his or her money: a commission for every survey completed.
As I've recommended before, if you see a scam like this one, report it. Then go check your own wall to make sure you're not spreading the scam; the sooner you clean it up and unlike the page, the better. You can even contact Facebook Security if you'd like to.