From Alexis Ohanian interview in 2006:

> Paul wanted to give Aaron Swartz, another YC founder, a birthday gift in November. More than anything else, Aaron wanted co-founder so Paul suggested the “merger”. Merger is probably a bit hyperbolic for what actually happened, Aaron basically moved in with us and we made him a co-founder.

> http://web.archive.org/web/20070823200504/http://startupstor...