Why does it keep saying that '#' is a pound sign?
because it is? They are called pound signs. Or number signs. From wikipedia:
The term number sign is most commonly used when the symbol is used before a number. In the United States and Canada, it is sometimes known as the pound sign (particularly in the context of its use on telephone keypads). source
Oh. I was thinking of the currency.
Yea, that is why numbers sign is more frequently used then pound sign, because pound sign can be confusing
Let's keep it simple:
£ - Pound
# - Number
£1.50 - One pound fifty (pence)
#3 - Number 3 (e.g. Third place)
I would have called '#' a hash.
That would be correct too, but it's just personal preference, really.