Yup, another one. 
There's a new pay-to-post job board focused solely on Ruby on Rails jobs at http://agilewebdevelopment.jobcoin.com/, which will is now prominently featured at http://www.agilewebdevelopment.com/, the home of the Rails plugin directory.
If you are looking to get your open position in front of thousands of Rails developers who are out there building Rails applications, this is the place to post. If you hurry, you can even get a discount. More info at the link below.
http://www.bencurtis.com/archives/2006/11/ruby-on-rails-jobs/