It seems pretty clear by the article that he wasn't doing any of the "business" things like tracking deductions or documentation of any kind. He could probably

It seems pretty clear by the article that he wasn't doing any of the "business" things like tracking deductions or documentation of any kind. He could probably muster up his hosting and domain name bills but that would be it, and probably the majority of any deduction he could take anyway (recognizing his library and other "support" items as deductible as well).