Another nice thing I really like about LeanPub is the discount code system. You can create special discount URLs where you can specify the discounted price, an

Another nice thing I really like about LeanPub is the discount code system. You can create special discount URLs where you can specify the discounted price, and optionally the period of validity and the max. number of uses. I've used that in the past for promoting the book, but also for giving the book to colleagues for free (and being able to track whether they actually cared enough to add it to their library :D). With a traditional publisher, you can typically get some coupon codes for the ebook, but it's a slow process, with little control over the actual amount, no direct access to tracking data etc.