This is actually the "Tagxedo" shop in Zazzle, and the category is called "Y Combinator". The link goes to http://www.tagxedo.com/shop/y-combinator http://www.

This is actually the "Tagxedo" shop in Zazzle, and the category is called "Y Combinator". The link goes to http://www.tagxedo.com/shop/y-combinator http://www.tagxedo.com/shop/y-combinator so this is also Tagxedo shop Y Combinator category. It's clearly stated that this is a tribute. I don't think I used language that is misleading, but I'll triple check.