CamelCasing a Constant: Acceptable Practice?

[PK8]

I guess this is more of a general ruby question. So I've wrote a couple of scripts, and I can't believe this little thought hasn't hit me in the head until now... I think. But I'd like to hear it from the scripters. Constants can be CamelCased but should they? Is it an acceptable practice to CamelCase a Constant/use lowercase letters in Constants?

Edit: Wikipedia on CamelCase
Edit 2: If anyone feels it's more of a discussion thread than a support thread, feel free to report it/move it over.