ruby-sapporo/sapporo.rubykaigi.org — pull request #31 by agrimm (2012-06-25 14:15:53+00:00)
Title: Minor English changes.

”Mania" は 病気 です。”Maniac" は 病気の人。
"Mania" is the disease, whereas "Maniac" is the person with the disease (ie, a Rails オタク).