Trendmaker Inc Ltd is engaged in the book publishing business. Its business is to publish eBooks under the Nuts and Bolts brand name and deliver it on a worldwide basis through the internet. The eBook creation process starts with market research. This research consists of identifying the categories of current " best sellers" published by other companies. The next step in developing eBook titles is to rank this list of potential titles/topics by potential profitability, before developing ebooks.