I've actually been somewhat interested in this as well. I've only started fleshing out an idea and playing with App Engine and Amazon S3. I'm actually thinking

I've actually been somewhat interested in this as well. I've only started fleshing out an idea and playing with App Engine and Amazon S3. I'm actually thinking of offering what I've been working on as a SaaS in the future but I don't know where to start. I don't want to hijack the topic but I'll be keeping an eye out for any advice anyone has to offer.