Here are the highlights from today’s Blogroll dive:

Owen discusses the new user permission system in WordPress v1.6.
Michael Heilemann discovers that Plan 9 From Outer Space has entered the public domain.
Khaled becomes a member of the 9Rules Network.
Michael Hampton ruminates on trackback etiquette and trackback spam.
Jon revisits PHP Nuke.
Craig discovers a clever Flickr PHP script.
Sarah discusses Einstein the Violinist.
Angsuman receives an inside tip on the work culture at Google.
Tom offers some advice on what not to do when blogging for business.
And, Podz updates some of his WordPress guides.