If Facebook ever shut down, you'd see people aimlessly walking round streets, scribbling on walls, poking each other, searching for their friends, thumbs-upping and commenting at everything they see and tagging one another.
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  4. If Facebook ever shut down, you'd see people aimlessly walking round streets, scribbling on walls, poking each other, searching for their friends, thumbs-upping and commenting at everything they see and tagging one another.