Meh, I can't seem to manage catching you on weekend evenings either (by the time you might be online, I become too aware of the fact that co-writing tends to take time, and then if we would get started or even started planning I might end up being up really late, and I'm actually starting to get a little sleepy and would prefer an early bedtime...) But I'll still try to manage it some day.
This community has a recurring interest in "rationalist fiction," and several members who are writers. I wonder if it would be useful to create a space where Less Wrong members could provide each other constructive criticism and encouragement on in-progress original writing projects?
Disclosure: I'm working on a sci-fi novel right now, and my regular circle of "beta readers" are fantasy fans and aren't providing much feedback on the new project. I am much, much more productive as a writer when I get steady feedback, so I have a personal interest in looking for something like this. Less Wrong came to mind as a community of intelligent, creative, forward-looking types who are likely to enjoy sci-fi.