yappo's slide
20120425-techmtg-open-and-share
20120418-hokkaidopm_casual1-perl516
20120317-kyotopm1
20120127-ldena-folkatdevs2
20111118-yokohamapm8-hakadoru2
20111015-yapcasia2011-folkatdevs
20111015-yapcasia2011-perlhackershub
20111014-yapcasia2011-ikachan
20110706-shibuyapm16-RegexpAssemble
osdc.tw 2011 Groonga - with japanese search software history
20101209-shibuyapm15-mfpm
20101130-bpstudy-jstapd
20101130-bpstudy-webui
20101127-fukuoka.pm18-webui
20101016-yapcasia2010-jstapd
20101015-yapcasia2010-lt
20100424-osdc.tw-2010
too old