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The code you would want to add to the would be:

You can find more information about using the rel="canonical" at :

http://www.google.com/support/webmasters/bin/answer.py?answer=139394

Thank you for the advice, gentlemen.

Can anyone provide sources for gathering paid search advertising spend for competitors, preferably by category?

Thank you.

I'd agree with EGOL's suggestions for improving CTR.

As far as expected CTR for position 5 in the organic results, the average is around 1-2% CTR. This is going to vary depending on the quality of the other results (your CTR will be inversely related to the quality of the other results). You will also have to consider what verticals Google is pulling into the SERP. Your CTR might be worse than average if shopping results are showing above your listing.

You might also want to question the reliability of GWT impression and entrance data for the sake of testing CTR. In my experience the data they provide isn't accurate enough to come to a conclusion on the success of CTR tests.

Distilled has a great blog post that explains how to create a representation of link juice flow using Xenu and Excel:

http://www.distilled.net/blog/seo/understanding-site-architecture-with-xenu-and-excel/