William W. Franko & Karen Mossberger 
Digital Cities [PDF ebook] 
The Internet and the Geography of Opportunity

Federal broadband policy has largely ignored urban areas, where most Americans live. Using an original and unprecedented multi-level analysis of access and use in low-income neighborhoods, Digital Cities tells the story of information technology use and inequality in American cities and metropolitan areas. With original data and detailed analysis, this book helps us understand the oft-overlooked urban "digital divide" and what can be done to fix it.