I love it, but I'm really curious about taxes/export-import-duties/regulations, FDA, etc. I guess I always assumed there'd be some strict rules that would make starting this kind of business kind of hairy. Not so?
For example if I were to go to an anime expo in the US to sell candy there, then I would need to clear the customs and comply with FDA regulations such as the list of ingredients that have to appear in the packages.
But when I am situated here in Japan and people order things from me from all over the world, then they are the ones who are clearing the customs. However when the shipments are really small, customs is not a problem for the person receiving them and many countries have limits where you never need to deal with customs if the order size is small enough.