I rarely post anything before I have the entire work finished. For side projects, I'm willing to do ad-hoc releases, but this has almost never been the case in my experience. Waiting to have the whole thing done makes sure that you have all the time you need and zero pressure to make sure everything's just right. After all, a killer first impression is quite important.
In terms of posting schedule, I post every 2 days. That keeps me in range of the new page a little longer, albeit with a little less intensity and rapidity.
Addendum: Here's the story I didn't really post any of until it was complete. Unfortunately, being my first project, it was still kind of a mess. The next one will be different.