[bmatheny]

Having used RoR and Spring fairly extensively, I was convinced that Groovy, and more specifically Grails, would be great to work with. Fun? Check. New? Check. Bleeding edge unstable? Check. Extremely difficult to figure out how to do things you already knew how to do with Spring or RoR? Check.

I just wasn't able to ever get efficient with the platform and ended up having to figure out how to expose Spring internals to do the stuff I wanted to do.

I would recommend building something with Grails if it's a personal project but not for anything commercial or production.