Shaddows - 2:50 pm on Feb 9, 2011 (gmt 0)
Best SEO strategy: Do not believe everything you read in SEO forums.
Also important, diversify. We only have one site (although we own all similar domains, they are 301'd), so we have diversified our traffic sources and our revenue sources. More subtly, we have diversified different areas of our site in terms of structure so that lost traffic to one area tends to be compensated by gains elsewhere.