The moderators have accused website developer Josh Timonen of adopting some arbitrary and high-handed tactics in his implementation of the changes, causing Dawkins to step in and defend his man from the abuse levelled at him by some (You can read the view of one moderator here, and Dawkins's response to the criticism here).
However, here at New Humanist we are able to bring you the real reason for the closure, having chanced upon this post at Christian website Christwire.org:
So there you have it. And if you're wondering why they hate Dawkins so, here it is:
"For years we warned atheists that we would take down their site entitled RichardDawkins.net, by the power prayer.
The atheists laughed and said prayer did not exist. They cursed us and said there was no God. I warned them time and again, and now, we see the true power of God as he has closed their sinful site, RichardDawkins.net."
"For those of you who do not know, Richard Dawkins is one of the worst offenders before God. He promotes bestial relations. He thinks that a “less evolved” human man and a monkey woman had sexual relations to create us."A fairly accurate summary of The Selfish Gene, wouldn't you say?
Update: Okay, so it turns out the Christian website is a spoof (thanks Jared). Still funny though, and to be fair we've seen plenty of non-spoof evangelical statements even more ridiculous than that, so you can see how it got us!