First European Ruby Conference
   On 21-22 June 2003, University of Karlsruhe, Germany. Fee: 20 Euros to pay for Matz's flight. Language: English, or German where everyone knows it. All are welcome.
   http://www.approximity.com/cgi-bin/europeRuby/tiki.cgi?c=v&p=EuropeanRubyConference

Mountain West Ruby Confernce
   Annual regional event. Chad Fowler keynote. The 1st conference is 16-17 March 2007, Salt Lake City, Utah, USA.
   http://www.mtnwestruby.org/

O'Reilly Open Source Convention 2003: Ruby Sessions
   By track, 10 July. OSCON conference was 7-11 July 2002, Portland, Oregon.
   http://conferences.oreillynet.com/pub/w/23/track_ruby.html

Ruby Conference 2006
   Annual international community event. Meet Matz. The 6th US conference is 20-22 October 2006, Denver, Colorado, USA. See writeup and photos of prior events.
   http://www.rubyconf.org/

Silicon Valley Ruby Conference
   Annual RoR conference and workshops. The 1st US conference is 22-23 April 2006, Network Meeting Center, Santa Clara, California, USA. SDForum.
   http://www.sdforum.org/SDForum/Templates/Level1.aspx?pid=10218&sid=3