I'm using the Racket webserver, but each page is it own rkt file. I'm using no continuations, just storing and reading everything in the hard disk. (I'm not sure it's optimal, but I prefer that approach.)
Sorry, but it's a internal website for the T.A. in the university where they can choose the building and hour to teach next semester (~500 persons).
I have a shared module for the common parts of the webpage (like footer or header), parameters for the info of the user (like name or email), some macros like for/user to iterate through the whole list of users updating the parameters, and a macro to hide all the boilerplate at the top (it probably should be a #lang, but a macro is easier to write).