Thanks to the following people for support, code, patches, etc:

Valious Suggestions
   Hideki Yamane <henrich@debian.or.jp>

Random Character generation(before 0.8.13)
   http://orfeus.knmi.nl/pub/outgoing/chad/perl/randstr.perl

Valious libwww inspirations
   http://homepage3.nifty.com/hippo2000/perltips/index.htm

Perl ithreads howotos
   http://scottr.org/oggify/

Configuration file skeltons about GikoNavi
   moju <h677@users.sourceforge.jp>
   yoffy <yoffy@users.sourceforge.jp>

Regular Expressions to find URIs
  OHZAKI Hiroki <ohzaki@din.or.jp>
  http://www.din.or.jp/~ohzaki/perl.htm#URI
