There are many kinds of data marketplaces out there on the web today. Some are very software application, user type centric serving up information and content with only that user persona in mind. Others only offer data for display or as analytics and some are just websites with narrow content around a limited amount of available data types offered for purchase off-line or with a paid subscription. Finally, there are data marketplaces that only connect sellers and buyers of available data with very sparse information.
Some key questions to be answered:
I want to know what data experts think!
Product Manager, Pitney Bowes Software and Data Marketplace