Facebook "Like" App: A Real Sneaky Bastard

If Facebook apps are harmless then why are some of them such sneaky bastards? I logged in this morning and found a notification that someone "likes my photo." I clicked on the word "photo" as I normally do expecting it to take me to the photo in question. Instead, it took me to a page. WTF?

You have to look pretty closely to notice any difference between the fake and real "likes" - it appears to be how the link is formed.

I have no idea what this apps really does, but if it has to be that sneaky it can't be good.

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Update: I guess the folks behind the "Like" app had to change things around a bit. This morning's latest notice was that "Lika" needed access...