"_index" gets appended to paths

hi, guys,

  I found that some of my paths are getting an "_index" appended to
it.
Reading http://groups.google.com/group/rubyonrails-talk/browse_thread/thread/8c9c84e884680f90,
it says that rails does so when an uncountable resource is being
mapped, "_index" will be appended to the end of the path.

Here's what I used in my routes: