I've had a small PowerShell related subsite at http://www.reskit.net/monad. As the name might indicate, the subsite has been up for a while and it's in need of updating.
I've now put up http://www.reskit.net/powershell, and a forwarding page at the old web address that points to this new subsite. I've also updated some of the content. I'll be updating this page more in the next week - it's been a good test of the new SharePoint Web Designer product whcih is part of Office 2007.