You might be seeing something on your Facebook wall today:

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Sadly, it’s not a fun video.  It’s just a phish.
The link goes to apps. facebook.com/ lookatuhah, which then redirects to a phishing site:

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In other words, if you’re absent-minded enough to enter your credentials again, they will be used to then send more of these stupid fake videos posts to others — or do any of a number of other rather nefarious things.