Originally Posted by JSWolf
Please, don't add the soft hyphens if you are planning on selling these eBooks. All it is going to do is bloat the size of the KF8 and possibly screw up the Mobi. Most people won't be bothered by not having the soft hyphens. And given that the PW has less memory then previous models, it's just wasting that memory to have the soft hyphens.
Of course, if they are for your own personal use, that's fine for you to do whatever it is that you like.
Bloat? Really? Have you measured the increased file size? What no one will notice is the increased file size. As for the difference in the appearance, it is a striking improvement, especially for folks who like to use a larger font size. Those huge rivers of whitespace running through Kindle books may not bother you young folks, but plenty of older folks need this.
And, Kindlegen has been removing the soft hyphens from the old .mobi format since version 2.4. But, I test my books just to be sure.