I read the license of Geodata provider (facebook, foursquare...) but I don't understand what it means:
LICENSE FROM YOU TO MAPQUEST. If you upload any data, feedback, ideas, suggestions, content, points of interest (including any points of interest that include Trademarks) or other material to MapQuest (collectively “Your Content”), you hereby grant MapQuest a perpetual, worldwide, non-exclusive, royalty-free license to access, archive, reproduce, publicly display, translate, modify the format or the display of, distribute, transmit, stream, cache, overlay, seam, perform, sublicense, and otherwise use Your Content with or without attribution and without financial obligation, in whole or in part, via any method for any purpose. MapQuest makes no assertion of ownership over Your Content, and you retain all intellectual property rights to Your Content, subject to the license you grant to MapQuest above.
For example, I would like to use their data and load it into my geodatabase. Is that allowed?