default to a blank string to make sorting more useful
default to a blank string to make sorting more useful
pyconjp/pyconjp-website,osmfj/sotmjp-website,njl/pycon,njl/pycon,pyconjp/pyconjp-website,Diwahars/pycon,Diwahars/pycon,osmfj/sotmjp-website,Diwahars/pycon,PyCon/pycon,PyCon/pycon,osmfj/sotmjp-website,eldarion/pycon,smellman/sotmjp-website,eldarion/pycon,smellman/sotmjp-website,osmfj/sotmjp-website,Diwahars/pycon,njl/pycon,PyCon/pycon,pyconjp/pyconjp-website,smellman/sotmjp-website,eldarion/pycon,njl/pycon,PyCon/pycon,smellman/sotmjp-website,pyconjp/pyconjp-website