Hi there, on page 315 a bit of a teaser is left,

"In this example, you are customizing the existing ItemStyle.xsl file. If you are worried about the impliciations of customization, you can create your own item style XSL style sheet and set up the Content QUery Web Part to load it automatically. To learn more about this, check out Liam Clear'y blog post, "SharePoint 2010 - Content Query Web Part Continued" at, www.helloitsliam.com/Lists/Posts/Post.aspx?ID=225"

However, this post does not exist.

I have not been able to find the Content Query post either, but here is a link that will get you to the posts.

http://blog.helloitsliam.com/Lists/Posts/AllPosts.aspx

Searching for the title of the post or the ID returns nothing.