DownloadPal is a free service that allows developers to easily sell and distribute their digital goods to customers, in a safe and secure way. A developer uploads a digital good to DownloadPal. A customer finds the digital good on DownloadPal. A customer purchases the digital good through PayPal and is instantly able to download the file on DownloadPal. Developer receives payment and they haven't even lifted a finger. Once a digital good is uploaded, the whole process of selling and distribution is automated! Try out the free service, here! Some cool features: PHP script's can have license files generated for them, to prevent piracy. This will only allow that script to work on 1 domain. Once a customers buys a digital good, they can instantly download it. It's all automated!
Definitely helpful for a business that might specialize in digital downloads. However, I've the tradition digital download niche of "EBooks" to be quite saturated. Do you happen to know of any markets that could be used with DownloadPal that might be successful? I think you definitely have a quality product that we can all appreciate.