Very relevant. Also, take note of the "Social Influencer" list at the bottom of the article. Since links are included, you can actually see how these people are using social bookmarking and social news sites.

Quoted: A new kind of Web site is turning ordinary people into hidden influencers, shaping what we read, watch and buy.
By JAMIN WARREN and JOHN JURGENSEN
February 10, 2007; Page P1

redotted from eric