User blog comment:ChunkyChipackers/Rule Proposal: Maximum/@comment-1874924-20140224033951

Although it's not a formal rule, the unwritten policy that's been in force for quite some time is that a user should not have more than three competition stories in progress at any given time, because there's just no way to have more than that and still do justice to any of them. Collabs where the user isn't the lead writer don't count against this limit. Noncompetition stories aren't limited either, since so few people here write noncomps anymore that it's never been a problem.

Another way that we control excessive in-progress stories is through our rules against title squatting, which are on the rules page. In most cases, a story page that doesn't have a full chapter or equivalent support material posted with one month after the page is created may be deleted "on sight", without warning to the user who created the page. Sequel title that have been properly reserved are exempt.