I Am Not A GST Number! (Or wait, should I be?)

It was a frustrating and nearly fruitless search. But after dozens of webpages rehashing the same few non-commital sentences, I finally found someone who would plainly explain why a writer would need or want a GST number.

Thank you Robert J. Sawyer. Because of you, my brain hurts a little bit less.

The Business of Writing - GST Registration by Robert J. Sawyer