Ruby and Rails links, Best of

Monthly collection of Ruby links that I'll regret forgetting about:

• My 10 Favorite Things About the Ruby Language � Katz Got Your Tongue?
• http://dablog.rubypal.com/2009/1/14/10-things-to-be-aware-of-in-moving-to-ruby-1-9
• http://dablog.rubypal.com/2009/1/16/son-of-10-things-to-be-aware-of-in-ruby-1-9
• http://www.manning.com/black2/
• Upgrade to Rails 2.3.4, 2.2.3 (Security Release)
• Riding Rails: Gem Packaging: Best Practices