> application. Indeed, this book project is considerably more likely
> to return tangible benefit to the Postgres group (in the form of new
> users/contributors attracted to the project) than most other ways
> people might be using Postgres to make money.
Exactly! No need to apologize for attracting attention to PostgreSQL.
> In short, you needn't offer the slightest apology for collecting the
> book royalties personally. From what I've heard of the book-writing
> biz, you're unlikely to get rich off it anyway :-(
And if you do get rich, you can retire and spend all your time on
enhancements to PostgreSQL :-)