Mirror Lenses.co.uk
Testing out affiliate marketing to strengthen my knowledge for ePHOTOzine I signed up to some tutorial course and it suggested finding niches so I experimented with this site. A specialist site devoted to mirror lenses. Hand coded using my macro bellows formula. It's when I learned how to add php include files. I've not touched it for 4 years or so.
http://www.mirrorlenses.co.uk