Costin Leau over the SpringSource team blog writes about web applications and OSGi, including why are web applications in OSGi problematic and how to integrate them with a web container, all of this in the context of Spring Dynamic Modules, the latter of which is the union of the Spring framework with OSGi. The Costin's complete post: http://blog.springsource.com/main/2008/04/29/web-applications-and-osgi/