Historypin is a way for millions of people to come together, from across different generations, cultures and places, to share small glimpses of the past and to build up the huge story of human history. Everyone has history to share: whether its sitting in yellowed albums in the attic, collected in piles of crackly tapes, conserved in the 1000s of archives all over the world or passed down in memories and old stories.
Uencounter.me is a virtual pin map that is social. We've recently introduced a 'genealogy' pin that allows you to pin ancestral information on your map. By linking with other users, you can share the map and overlay it with others to identify common locations.
WhatWasThere ties historical photos to Google Maps. The premise is simple: provide a platform where anyone can easily upload a photograph with two straightforward tags to provide context: Location and Year. If enough people upload enough photographs in enough places, together we will weave together a photographic history of the world (or at least any place covered by Google Maps). So wherever you are in the world, take a moment to upload a photograph and contribute to history!
Social Networking for Genealogy » Mapping