There is a story behind it. Short version; I know a 20th Century modernism art & antiques shop named So Quhl. His explanation was So Cool was mundane, didn't like kool or kuhl. He pronounced it So Cool.
I could have reg'd SoQuhl. but already owned Quhl so that is where the tag line 'Raising Cool (Kuhl) To The Power Of Q' came from.
It is my intention to build a very Quhl internet resources directory.