[nathan_long]

This is really murky to me. As a professional, I keep notes as I learn things which may or may not relate to my current employment. The notes are my property and part of my knowledge base that I bring to any job. But I suppose I indirectly receive compensation for knowing things, so I need a commercial license?

Or what if I start taking notes on some random subject for fun, and eventually I write and sell a book based on them? All of a sudden I need to start paying a yearly fee?

It's not a prohibitive amount of money, but I'd be much happier with paying a one-time fee for the current version, then buying future versions if I choose to.