One of the more important Good SEO tips is to make sure that your Headers (H1, H2, H3) consistently have keywords in them.  Think of them as super labels.  You are telling the search engines and your visitors what each section is about.

• Important, Young Grasshopper, like the proper amount of head on a beer.
• Be Concise. Use your most important keywords first.
• Rule of Thumb: H1 = 1 – 2 keywords. H2 = 2-3 keywords, H3 = 3-4 keywords… simple in theory.

See Also: Keywords in your URL