Martijn has a background in the semantic and contextual webs and he brings that expertise to Local Search with a European perspective. Martijn is currently living in the Netherlands where he focuses on research and optimization at Onetomarket, a leading online marketing agency covering most of European markets. He writes at his blog, Local Search Optimization and makes “guest appearances” Stateside.

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The local search ranking factors, clearly one of the most extensive works I’ve seen in Local Search with many authorative voices on this topic, mad props for David!
http://www.davidmihm.com/blog/google/local-search-ranking-factors/

Cracking the code. I was lucky to see the presentation before SMX and was impressed.
https://blumenthals.com/blog/2008/08/04/ranking-factors-in-google-maps-cracking-the-code-smx-local/  

I wasn’t there and this made me feel like I was!
http://www.davidmihm.com/blog/seo-industry/smx-local-mobile-recap/

well, my own 😉  no guide so far around, It got good positive feedback from all around the web and clearly Google likes KML so why not use it in your Local SEO efforts?
http://www.martijnbeijk.com/tutorial/using-kml-for-local-seo/

Tele atlas data change, and into extent all the topics afterwards about possible improvements to Google maps because of this deal apply as well.
https://blumenthals.com/blog/2008/09/19/google-maps-now-using-teleatlas-data-exclusively/  

fun fun fun (shake em up ! )
https://blumenthals.com/blog/2008/10/30/microsofts-listing-in-google-maps-hijacked-oops-by-me/  

good 10-list, but 27th of december Don Campbell released a good one as well, its all about the basics:
http://www.davidmihm.com/blog/general-marketing/the-ten-commandments-of-online-marketing-for-small-local-businesses/  
and
http://www.chiropractor2web.com/online-marketing-tips-chiropractors/

Questions raised, Questions answered
http://searchengineland.com/google-answers-your-local-questions-14956.php

Made me think about print vs online for yellow pages
http://www.solaswebdesign.net/wordpress/?p=215

Short and basic, what are the main differences between US and Europe Local Search and why this changes your approach to optimization.
http://www.searchcowboys.com/seo/186

#11 best google maps joke:
http://xkcd.com/461/