Which Facebook Header pic should we use? #poll

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I don't really like Facebook. I would like it so much more if they weren't so stupid with their algorithms. Few people see our posts that it's almost not worth it. Perhaps this is the same as with a tweet, but at least I see results from my Twitter marketing.

But that's a side point. What I would like from you is your opinion. Which pic should we use for our Facebook Header? I like them all, so I'll gladly choose the one the group picks. There's a poll after the pics.