I'm curious about how the site is created as well. Is there an IFTTT recipe for posting to WordPress from Pinboard?
You can do a lot of hacky stuff with IFTTT if you play with RSS too. For reference, I made a Reddit image auto-downloader in IFTTT by using RSS and Yahoo Pipes awhile ago: http://minimaxir.com/2013/01/if-cute-then-happiness/
Basic transforms / Regex / Basic if statements applied to trigger inputs/outputs would be invaluable.