]

End Bracket. Used in making some smileys. Also often used at the ends of comments by people who have fingers that are larger than the enter key.

Lol, that's like the greatest thing ever.

20👍 6👎

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is a stupid-ass key which just so happens to be below the backspace key and above the enter key. Similar to the infamous \ (backslash) key.

Person 1: Hello!
Person 2: Why did you type ""?
Person 1: Damnit, that stupid fucking closing square parenthesis...

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Me: ""
Someone else: ""