Octothorpe was coined by AT&T who invented the symbol so I wouldn't be surprised if they use it sometimes. Why leftpondians call it a pound sign is just an indication of their strangeness
It is believed that the symbol traces its origins to the symbol ℔, an abbreviation of the Roman term libra pondo, which translates as "pound weight"
Coined yes, invented um no # was around for some time
Biting the hand that feeds IT
