Sent.
Apparently you now come with references. Any interest in joining my betabet*? (It generally meets on IRC and betas in realtime; I don't know if that works for you. You would also need to be caught up on Elcenia, unless you want to do only short stories the way my thetabeta does.)
*My betas get Greek letter designations (alphabeta, betabeta, etc.) and are collectively a betabet, analogous to an alphabet.
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.