“Writing for Search Engines” is a long standing session by Heather Lloyd-Martin and Jill Whalen. It’s a great session covering the basics of SEO friendly copywriting and a good primer for those new to SEO.
Search Engines are constantly improving their ability to sniff out the spam and de-value irrelevant links such as those from link farms. They are making the same kinds of improvements to the indexing, categorization and sorting of web pages in the search results.
In order to make it easier for search engines to do their job, it’s important to incorporate the keywords for which you wish to be found in your site content, title tags and meta descriptions. Now when people search for those keywords, there’s a greater likelihood that search engines will rank the web site higher than a competitor site who doesn’t have relevant keywords in the content and links of their site.