Revert "2014/11/1 seo"

This reverts commit 94423336e414966d9249175dc47c6ae515741172.
Revert "Revert "2014/11/1 seo""

This reverts commit 247cf4ecebc4ab0e56fc8383e4a803bc2a111943.
Merge remote-tracking branch 'origin/gh-pages' into gh-pages