title: Rails 3: alias_method_chain still used?
body: <p>I was just reading about Gems/Plugin development for Rails 3 and ran across <a href="http://piotrsarnacki.com/2010/06/18/rails-internals-railties/" rel="noreferrer">this post</a> that says that alias_method_chain is no longer used. I can see the method is still there in activesupport-3.0.0/lib/active_support/core_ext/module/aliasing.rb.</p>
  
  <p>Should I still be using alias_method_chain in Rails 3?</p>
  
  <p>Is <a href="http://6brand.com/counting-with-scope_out-fun-with-alias_method_chain.html" rel="noreferrer">this</a> still reflective of the best practices for gems/plugins in Rails 3 that want to modify ActiveRecord?</p>