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birdy1976: News on #energy efficiency, travel substitution, paperless work, production & #waste management #GreenIT #ClubOfRome http://icio.us/887UD4
birdy1976: News on #energy efficiency, travel substitution, paperless work, production & #waste management #GreenIT #ClubOfRome http://icio.us/887UD4
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birdy1976: Twifficiency calculates your Twitter efficiency based upon your activity. My score: 40%. What’s yours? (via @mebner) http://icio.us/q0z5zk
birdy1976: Twifficiency calculates your Twitter efficiency based upon your activity.