Volunteered geographic information and social networking in a WebGIS has the potential to increase public participation and provide timely data that may be otherwise unavailable in soil and water conservation management.  The objectives of this study were: 1) to develop a framework for combining current technologies, computing advances, data sources, and social media; and 2) develop and test an online web mapping interface to solicit volunteered geographic information about sediment pollution of abandoned developments in upstate South Carolina.  The mapping interface integrates Microsoft Silverlight, Bing Maps, ArcGIS Server, Google Picasa Web Albums Data API, RSS, Google Analytics, and Facebook to create a rich user experience.  The website allows the public to upload photos and attributes of their own subdivisions or sites they have identified and explore other submissions.  The website was made available to the public in early February 2011 at http://www.AbandonedDevelopments.com and evaluated for its potential long-term success in a pilot study.