These people contend that his background was a much better fit for the firm's traditional business of trading futures on exchanges for clients, rather than its aspirations under Mr. Corzine to become a full-service investment bank that could nimbly trade various financial instruments.

WSJ: Corzine Rebuffed Internal Warnings on Risks at MF Global

We visited three New York stores and got various answers from the customer-service representatives who processed the trade-in of our BlackBerry.

WSJ: Finding a Market for Your Old Electronics