I've been at it for some years now, and it's been featured here a couple of times. The backend (astronomical computations and generation of the PDF) I implemented in Common Lisp. It's still tiny: I get around 20 visits a day, sell around a poster a day, and can't figure out how to make it grow.
If you're converting 5% of new visitors into customers, you're already doing well - setup some paid search on long-tail terms. Unique anniversary gifts, unique birthday gifts for outdoorsy folk, etc.
http://greaterskies.com
I've been at it for some years now, and it's been featured here a couple of times. The backend (astronomical computations and generation of the PDF) I implemented in Common Lisp. It's still tiny: I get around 20 visits a day, sell around a poster a day, and can't figure out how to make it grow.