A continuing problem for booksellers, especially those with an online presence, is the receipt of fraudulent orders. A number of booksellers have reported receiving bogus orders from overseas -- via either their retail Web sites or e-mail -- for large numbers of hardcover books, often Bibles or medical texts. These orders usually originate in Nigeria, Ghana, Singapore, or Egypt and are usually in excess of $150. The books being ordered are most often Bibles, other religious titles, medical texts, or other reference books.