I am not a reclusive math genius, but I share some of their properties: "Perelman did not feel the need or obligation to participate in the traditional peer-review process, believing instead that anyone who wanted to look at his work could do so. For whatever reason, Perelman has decided to opt out of most of the social rituals of his profession, yet open access publishing has enabled him to at least share his work with the world." I think this is an important point. A lot of people think of 'collaboration' in traditional terms. Especially in the sciences and universities.