Though I don't provide SEO services professionally, I try to stay on top of SEO issues. I've decided there's only one absolute truth that can be said of Google: as soon as you think you know how it works, they change the rules again.
I picked up a little tidbit recently from a study by a German company, Systrix, that may be of interest to any of you who optimize your content area titles. It appears that Google no longer reads keywords in <h1> tags, though they still read the other <h> tags. Since content titles are formatted with <h1> tags, you may want to adjust your coding and SEO strategy accordingly.