I recently set up an IPN responder with PayPal so I can email people download instructions who buy my book. I blogged about this last week: http://www.insideria.com/2009/08/certified-adobe-flex-3-with-ai.html It only took a day and a half to get the proof of concept working, but another 7 days to make it industrial strength.
BTW, the book is called "*Flex Data Services, Eclipse and Hibernate*" and it is available now from http://slinnbooks.com Mike -- *Michael Slinn* +1-415-367-3789 Independent full-service software contractor and author Certified Adobe Flex 3 with AIR ACE
