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Rehan - 12:26 am on Mar 26, 2008 (gmt 0)
The example there would apply to your case like this... Display URLs such as the following: widgetsmakingguide.mycompanynameinc.com would all be acceptable for the landing page URL below, as the top-level domain of mycompanynameinc.com is matched: widgetsmakingguide.mycompanynameinc.com
bcc1234, that answer is covered in the blog post at [adwords.blogspot.com...] . Read the "Are sub-domains still acceptable?" section.
mycompanynameinc.com/extratext
mycompanynameinc.com
www.mycompanynameinc.com/extratext