By overclocking the microprocessor, graphics cards and other components, a hot-rodder is likely to increase the temperature inside the minitower, which necessitates more cooling fans.
Of course, we're still willing to bet that Apple's legal team is licking their chops in anticipation of something actionable happening, but we'd say the most interesting thing about this so far is the incredible amount of attention a low-cost expandable minitower running OS X has gotten -- maybe someone at Apple apart from the lawyers should be taking notes as well.