Wikipedia
Platial
Platial was a collaborative, user generated, cartographic website. It was founded in 2004 by Di-Ann Eisnor, Jake Olsen, and Jason Wilson. Platial, Inc. was headquartered in Portland, Oregon.
Platial was used by hundreds of thousands of people globally to share and associate relevant content with geographic places of interest. Platial claims 25% of the web's map widgets, used on over 10,000 sites.
On October 18, 2007, Platial acquired Frappr!, another social mapping website, increasing its total user-generated locations to more than 100 million.
On February 27, 2010 Platial announced that the service would be closing down within a few days.