Yahoo OAuth Ruby + Yahoo Social API

I was just wondering if anyone has worked with Yahoo OAuth or the
Yahoo Social API. They seem to have a pretty thorough and simple PHP
library, but has anyone attempted a RoR implementation? I'm basically
looking for some sample code on how to authenticate using Yahoo OAuth
and then getting the current user's profile through this URI
http://social.yahooapis.com/v1/user/{guid}/profile. If anybody could
provide any guidance that would be greatly appreciated.

Thanks!