The report covers the key web sites which facilitate the trading, procurement, and listing of aircraft parts. It provides not only a synopsis of their key capabilities and policies, but the results from a survey of the aviation industry on their usability and how customers view these sites. This in-depth survey covered many aspects of 20 of the aviation industries most-used web sites/marketplaces. It also delves into emerging industry trends to be aware of RFID, electronic forms (eForms), and Software-as-a-Service (SaaS). The most important trading mechanisms and formats, such as ATA Spec 2000, X12, UN/EDIFACT, and the new Type X are discussed from a nontechnical perspective, and guidance on potential solution providers is provided. Also presented is a set of general recommendations on protecting yourself and securing your data as you do business on the Internet, and an overview on optimizing your web site. This report is written for anyone is involved with handling aircraft parts in any way. The data provided concerns not only marketplaces which allow for trading of parts, but market conditions which may affect the pricing of parts in certain situations. For more information visit www.opmresearch.com.