Two recent studies, by Vanderbilt University researchers and the Commerce Department, have found a major disparity between black and white Americans in the digital world.The studies show that white families are more than twice as likely as black and Hispanic families to own home computers. The Commerce Department report, "Falling through the Net II," said about 76% of white families with salaries over $75,000 own home computers, compared with only 64% of black families at the same income level. Across all incomes, about 41% of white families own PCs but only about 19% of black and Hispanic families have home ...