We've had a request from bugsy over at Open Source ZX - he's looking for any ZX source code. The aim of the site, if you've not been there before, is to provide the source for various ZX productions, from utilities to demos and games. There's already a large number of programs available on the site, but more are always needed. I'm going to go through some of my source at some point and "tidy it up" for general release.
You can send your work direct to bugsy[at]yandex[dot]ru.