Nope - people reading my book online who decide to buy the paper copy aren't a minority as far as a know. If you read it online and then buy the book I've made a sale, if you don't read it online and don't buy it I've not lost a sale. The only sale that could be a loss are people who read it online and don't buy it. And everyone who reads the online edition may well buy the sequel, or offer me work doing other things - and ultimately it lets me build a better relationship with the people who are interested in my stuff. So it all works out well, and so there has been no problem in Harper allowing the same terms for the sequel.