Participatory news network NowPublic announced its second MostPublic Index, identifying the 50 most influential individuals in Silicon Valley/San Francisco.

The MostPublic Index is a detailed (and transparent) barometer of who’s voices are most heard in the digital landscape as new channels—Twitter, Facebook, Flick, YouTube and the like—transform how media is created and spread. Last week, NowPublic identified and announced the 50 MostPublic influencers in New York.

NowPublic examined statistics in each of these categories from Alexa, Compete, Facebook, Flickr, Google, Quantcast, Technorati, YouTube, and various other blogs and sites, to create a list of Silicon Valley’s leading influencers. It then narrowed the list to 50 by analyzing and documenting individuals’ presence and popularity in each of these channels, applying a weighted scoring system, determined by the strength of specific traits held in each online community.

Here is NowPublic’s MostPublic individuals in Silicon Valley/San Francisco:

1. Robert Scoble
2. Michael Arrington
3. Jack Dorsey
4. Biz Stone
5. Matt Cutts
6. Pete Cashmore
7. Dave Winer
8. Guy Kawasaki
9. Loïc Le Meur
10. Kevin Rose

The entire list can be viewed here.

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1. NowPublic launches MostPublic Index
2. Silicon Valley predictions
3. NowPublic secures $10.6 million funding
4. NowPublic acquires Truemors
5. AP and NowPublic.com announce distribution deal: citizen journalism to be syndicated via AP