Online communities based on my writing have always been started by other people rather than by me, and I'd prefer not to have any responsibility for them, or any power over them. The one that has been around the longest is the
Ran Prieur Discussion Board on Yuku.com.
In Feburary 2010 a reader started the
ranprieur subreddit. It's easy to make a reddit account, and the ability to upvote and downvote makes reddit somewhat self-moderating. Here's the
reddit FAQ, and if you're just starting out there, I recommend you carefully choose your subreddits and display preferences.