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Yahoo! Groups offers free mailing lists, photo & file sharing, group calendars and more. Discuss hot topics, share interests, join online communities.

The official NASA World Wind forums

GIS Mapping Software - Global Mapper is a comprehensive GPS mapping software suite that allows users to view satellite maps and aerial photos.

GPS discussion forums for all types of satnav devices.

Downloadatoz.com offers complete common file extensions list with detailed information about each file extensions and the programs that open the file format.

ArcGIS forums

Spatial Mining provides satellite imagery, aerial tours, terrain models, geology and GIS consulting, digital elevation models, historical imagery, file conversion and GIS software, www.spatialmining.com

Convert your images with these free online image converter. Additionally apply professional digital filters and effects to alter your image.

wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-step instructions on how to do all types of things.

Android and Windows Mobile Developers - The Largest Community for Smartphone Hacks and Development of Apps

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Freecode maintains the Web