For a few of my Gigs, a product is delivered (PDF) which is stored on my website. I also log this revenue to my website accounting program. What would be nice is if Fiverr had an API setup so that when gigs were purchased, you could have a way to be notified like PayPal does with an IPN and everything would be automated. So that a purchase for my gig would notify us behind the scenes, and the API would connect with a file on my website so that I could auto-deliver the PDF immediately with a post on instructions and questions. Right now, I have to log on, attach the PDF, type out instructions, etc.