Its been a week since i discovered Factor. So first, it's stack based, it's small, it's almost tiny. I've never programmed in a stack based language before. But I liked it, really makes you think. Infact I haven't got any program written yet, just playing around in the interactive interpreter. It's got really good documentation by way of the API, what it could use is a quick start guide, ie. a list of some basic operations of the stack, using conditionals and looping and arrays and hashmap, because right now you've to look through the documentation for each concept, which means the unity is broken.
But great language, small community, even smaller existing code. What is bad is that most of the 'responders' give 404s. :(