One of the key components of off site SEO is getting quality backlinks especially from websites related to your industry or on social media sites.  Rand Fishkin covers SEO tactics using twitter in this video far better than I have ever seen and he shares it in a very compelling and concise manner.

Recap of Rand’s eight Twitter SEO link building techniques:

1. The “Serendipitous Connection”
2. The “Top X List”
3. The “Let me Build/Do/Find 
4. The “Story Teller”
5. The “List Suggestion”
6. The “Contest to Answer Your Question”
7. The “Must-Have Testimonial”
8. The “Biz Dev Deal”