I think what you're getting at is when I hear the language it's written in as the main differentiator, I assume it's a toy project written to scratch an itch. I think the language is more of interest here than on the product page and toy projects are relevant for discussion. If it's a language or a domain I'm interested in, I'll peek at the libraries and idioms used. I'll likely tag it for later referencing. It's also relevant because they don't offer binaries and there are certain build systems I'm not interested in dealing with.