Seaside (the Smalltalk web framework based on Squeak) is mentioned in an O'Reilly article:
"Web programming is an absolute disaster. After ten years of Java programming, we still haven't built a framework to get the Back button right. Web applications are stateless, so web applications scale better. But stateless applications are hard to build, and our frameworks do not give us much help. With most Java web frameworks, you basically build many unrelated pieces of the application using servlets or JSP, and then wire them together by manually saving objects that you need in temporary storage objects called sessions."
"Continuation-based web frameworks generally make web development much easier by simulating a stateful application."
"The best continuation-based frameworks are developed in dynamic languages. By far, the most robust is Seaside. It's a framework based on Squeak, a Smalltalk dialect. Seaside features fantastic debugging support--you can actually inspect, debug, and change your code from a browser"
I also like the Conclusion:
"In Beyond Java, I make the case that Java's not dead yet, but for the first time in nearly a decade, we're seeing compelling innovation happen beyond the borders of Java. These four technologies will play an important role in the near future. Watch them closely."
But I would not totally agree: in Smalltalk innovation happens all the time!