ErlyWeb is a component-oriented web development framework written in Erlang and designed to work with Yaws, a high-performance Erlang web server. ErlyWeb simplifies building database-driven webapps that follow the tried and true MVC pattern using a great language with many outstanding strengths:
http://www.erlware.org/index.html
http://bob.pythonmac.org/archives/category/erlang/
http://www.ntecs.de/blog/articles/2007/06/23/erlang-webserver-vs-mongrel
http://bc.tech.coop/blog/070528.html
http://www.trapexit.org/A_fast_web_server_demonstrating_some_undocumented_Erlang_features
http://chlorophil.blogspot.com/2007/04/erlang-macro-processor-v2-part-i.html
http://www.erlang-consulting.com/aboutus/opensource.html