At Goldman, the internal language Slang has spaces in variable names. It's insane at first glance and I got into an argument with my manager about why in the world this was acceptable, and he could give me no other answer than "this is the way it is".

But when you realize that space isn't a valid separator between token, seeing things like "Class to Pull Info From Database::Extractor Tool" actually becomes much easier to read and the language becomes highly expressive, helped somewhat by the insane integration into the firm's systems.

I was on your side until I tried it, but it can actually be quite useful, esp. if everything is consistent.