Someone's already poetsd the webfictionguide site which I believe is a good start. I'm currently writing one (started last fall) and am fairly late to the game (although I used to write fanfic and online many years ago).The most successful example currently that I'm aware of is Tales of MU from Alexandra Erin. She has been writing for several years and she is truly writing serially, as opposed to writing novels and posting increments a bit at a time.You'll find that webfiction tends to blur the approaches in the sense that some people are trying to release bits and pieces of a complete work (to motivate you to buy their completed ebook) and some are truly writing with a deadline.Going the route of weekly posting, btw, is sadistic, but I'm enjoying it. I'm not a full-time writer or artist, so this keeps me from totally slacking off. Anyways, it's an interesting world, but one that I think doens't have the support as much as it used to.Back when fanfiction.net and livejournal were more viable, you saw a lot more serial writing happening. I'm finding though at the moment that a lot of my readers say they've never read anything this way before. Surprising considering that used to be the norm ten years ago :/