A project I heard tell of a long time ago (I think someone asked about hosting) has been mentioned on Optical Bros. It's an Open Source project for the ZX. The site that's pointed to is down at the moment, but as they say on OB, it will hopefully start up again. As I understood it, the site would be something like SourceForge, but for our humble machine. A nice idea.
Actually, looking at some news on POS, perhaps it was just a repository for code. I still like the SF idea, tho'. Hmm.