Income for Fight Club fans is interesting, apparently correlating with both very low (<25k) and very high (>200k) incomes. I suppose a couple themes make sense with that data, the low income group presumably agrees with the anti-materialism message and rejection of following cultural norms of corporate careers. On the other end, the high-salary group is possibly the intelligent non-conformists who took risks which were rewarding (entrepreneurial or otherwise) which resulted in high incomes.

That, or being a fan of Fight Club means you're more likely to mess with online surveys...