WebAlchemy vs StaticGenerator

When two months ago I published WebAlchemy code, several people asked me how to make it working with nginx or lighttpd. Yesterday new tool similar to WebAlchemy StaticGenerator was published. Now it seems right time to explain how to use WebAlchemy with nginx and other servers that don't have .htaccess files, highlight some important differences between WebAlchemy and StaticGenerator, and say thanks to Django for signal framework that makes it all possible.