GooBooGeni is a free website linked to Google Books that indexes genealogy books and family history books. Their index includes city and county directories, local and county histories, surname histories, etc.
The site allows registered users to comment and create “favorites” lists for future reference. Searches can be made by locale, including the United States, Canada, and England, and by surname. On the upper right-hand side of the home page is a listing of most recently added books. To read the books, you’ll have to go to Google books.