Very useful signal that is typed when one pushes Shift and 6. It has many uses, some of which include:
1- An eye for the following emoticons: ^_^ and ^*^

2- A caret (symbol denoting that something is to be inserted somewhere)

3- Upwards arrow

4- Showing exponents (7^.5597)

5. Goes over random letters (usually vowels) in the French, German, and Hungarian languages (aka the circumflex)

its a funny trick to use to not have to type anything. but to agree its like a virtual bro fist: an act of agreement

Sometimes used in forums or messageboards to refer to the post above.

Caret, or the symbol ^

Used in a virtual conversation (eg. group chats, facebook chats) to repeat or emphasize what the above person said.

A symbol of punctuation that announces sarcasm.

When used at the end of a sentence, it marks that sentence as a sarcastic remark.