Are you a pirate?

[Dy7SLyTq]

nah there are some countries that are less strict about it

[BHX]

Actually, you are all right. '#' is called all the above depending on what you are using it for.

[N36fSL3A]

They should add a sharp sign to the keyboard.

[LB]

It's contextual.

On social network sites, it's #hashtag.

On phones keypads it's the pound symbol.

On numbered lists, #1, #2, #3, etc. it's the number sign.