1. Alyssa Milano Alyssa Milano

    Alyssa Milano has been tremendously successful in using Twitter as a tool to raise money for Charity: Water, a nonprofit working to supply clean water to those in need. On her birthday, she asked her followers to donate money to the charity instead of purchasing birthday gifts. Today she has raised $92,568 for the charity.

    Alyssa's Official Twitter Account »

  2. Ashton Kutcher Ashton Kutcher

    Won a 24-hour charity race with CNN on Twitter by being the first to gain over a million followers. He then donated $100,000 to the Malaria No More Fund.

    Ashton's Official Twitter Account »

  3. Hugh Jackman Hugh Jackman

    Announced a contest on his Twitter feed where he would donate $100,000 to a charity based on which follower could make the most convincing case on behalf of a charity in 140 characters or less. He and his wife ended up choosing two winners -- Charity: Water and Operation Of Hope.

    Hugh's Official Twitter Account »

  4. Edward Norton Edward Norton

    During the New York Marathon, Twitter helped him raise $1.2 million for the Maasai Wilderness Conversation Trust.

    Edward's Official Twitter Account »

  5. BP Global PR BP Global PR

    With over 170,000 followers and growing, this satirical Twitter account chronicles the public relation misadventures of BP during the worst environmental disaster in U.S. history. In addition to raising awareness of the awful situation, @BPGlobalPR is now donating money to the Gulf Restoration Fund. Proceeds from the sales of a “BPCares” T-shirt (which shows the logo smudged with oil) have already generated $20,000 in donations.

    the BP Global PR Twitter Account »

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