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bluntforce - 12:32 am on Apr 27, 2012 (gmt 0)
Shortly after I first read the Eric Schmidt quote about brands I started adding the site name on the right side of page title tags.
Site name is now always in the top ten keyword referrers and doesn't seem to negatively alter results for other keywords in titles. I suppose if you are willing to utilize limited space for branding rather than adding just one more keyword it might be seen as a "trust" factor.