I'm currently evaluating options for adding sub-domain support to a new Ruby on Rails app and was wondering if there were any suggestions or experience that others could share.
Some possible Choices
SubDomain-Fu
http://github.com/mbleigh/subdomain-fu/tree/master
Rolling your own
http://www.robbyonrails.com/articles/2009/01/11/subdomain-accounts-with-ruby-on-rails-explained
DHH Style http://37signals.com/svn/posts/1512-how-to-do-basecamp-style-subdomains-in-rails