Yes, Sam Fisher has a Twitter account and he's posting hints to what his mission is and how we can help him.
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Sam Fisher has a Twitter account!
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PG Tips launches new social media campaign
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Google buying Twitter?
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'' Twitter says hundreds...
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TwittaBling - launches with new web site offering Twitter-inspired accessories
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Reid gets a helping hand
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Akon follows Poonam Pandey on Twitter?
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Ram Charan tweets about Gabbar Singh
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Sen. Brazeau back on Twitter with promise to 'be nice'
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I'll live, tweets Hugo Chavez
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Justin Bieber Tweets he Officially has his...
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Facebook needs your help:
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Who Gives A tweet:
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Madonna joins Twitter!
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Twitter to roll-out paid-for business accounts
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Ledger urged to seek help
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Brett takes to Twitter to find dog