At this time, I do not know why the site went down. I've hardly been around YWS for a good month now, and certainly have not done anything besides ban a couple people in that timeframe.
What I think is going on is a combination of high user activity and increased numbers of hacking attempts. In the case of that latter, rest assured that nothing ever gets through (it literally can't get through as all the important stuff has access restricted by IP address). But, hacking attempts take up bandwidth. Combine that with high user activity, and the server couldn't handle it.
In the future, the backup site is almost always available:
http://yws.nathancaldwell.com
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