5 SEO tips for massive traffic?

Recently read an article about 8 seo tactics and their effectiveness, before and after the panda update:

(scale 1-10, where 10 is most effective)
article distribution: was 6, now 2
link on authority sites (gov, news etc): was 10, now 10
content sharing: was 8, now 9
directory submissions: was 3, now 1
guest blogging: was 8, now 9
link farms: was 2, now 1
press release distribution: was 7, now 2
social bookmarking: was 7, is 7

source: Top 12 SEO Tips for 2011 – Post Panda

For me, Social media is the best way for the website to have traffic. Using Highly traffic site like facebook, twitter and youtube can attract visitors. In addition, you can also use classified ads and forum.