I was wondering if you were gonna say something about this. It's an old Rails-ism that I'm happy to change – they used plural for collections, singular for specifying an item in the collection. Doing some googling, apparently there's a bit of a holy war about whether singular or plural is “correct”.

Looking at the most recent version of ActiveResource, it looks like even they've moved to all plural. I'd agree it's more consistent and discoverable and will change it!