Here are some great guidelines (from Google) about how to improve your site's Google rankings:
http://www.google.com/support/webmasters/bin/answer.py?hl=en&answer=34432

This provides a good overview of meta tags:

http://searchenginewatch.com/showPage.html?page=2167931

It looks like a lot of social media users are affluent --
http://blogs.mediapost.com/research_brief/?p=1668

Toyota, General Mills, Hewlett-Packard, and H&R Block are finding creative ways to reach customers through YouTube --

http://online.wsj.com/article/SB120485739329518557.html?mod=djem_jiewr_MK

This is a good primer on Search Engine Marketing (SEM) from CNET --

http://search-engine-marketing.classes.cnet.com/

Could it be that "the wisdom of crowds" is starting to wane?

http://www.newsweek.com/id/119091?GT1=43002

Note the topics that are being covered in the "Search Engine Strategies 2008 Conference & Expo":

http://www.searchenginestrategies.com/newyork/glance.html
http://www.searchenginestrategies.com/newyork/agenda.html
http://www.searchenginestrategies.com/newyork/agenda2.html
http://www.searchenginestrategies.com/newyork/agenda3.html
http://www.searchenginestrategies.com/newyork/agenda4.html
http://www.searchenginestrategies.com/newyork/training.html