Liu wanted to know if Buffett had tarnished his image by getting involved with an investment bank that is not exactly loved on Main Street.

FORBES: Goldman Tarnishes Buffett's Image

Public-housing estates, she argues, should be seen as a resource more than as a problem: making estates more attractive places to live by getting local people involved in their management would not only improve tenants' lives but would remove the cost of housing them elsewhere.

ECONOMIST: Tony Blair��s big idea