In the days after the immensity of the oil spill in the Gulf of Mexico became clear, some Nature Conservancy supporters took to the organization's Web site to vent their anger.

"The first thing I did was sell my shares in BP, not wanting anything to do with a company that is so careless," wrote one. Another added: "I would like to force all the BP executives, the secretaries and the shareholders out to the shore to mop up oil and wash the birds." Reagan De Leon of Hawaii called for a boycott of "everything BP has their hands in."

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