As a designer for Kirksville Web Design, we've seen a tremendous increase in companies leveraging Google Sites for project management, as you've highlighted Mark, and for wiki/intranet projects.
I appreciate how you've summarized the important page templates for project management, and there is a whole larger world of Apps Script and App Engine that can be tapped into. Then I get to make it pretty. =)
Thanks again for spreading the good news on Sites.
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