You can use numerous other tools to create the mobi and sell that eleswhere while you also sell the kindle mobi on Amazon. I've yet to run into a problem sendi

You can use numerous other tools to create the mobi and sell that eleswhere while you also sell the kindle mobi on Amazon. I've yet to run into a problem sending all sorts of files, ebook or otherwise (aside from epub), to my Kindle. That article seems to overstate issues with generating files readable on Kindle.