Saw an article today about the Virtual War Memorial and remembered that way back in 2008 at the National Archives we hacked together Google Maps and Tumblr to enable people to upload images and stories about WWI service people. In the 6 months following the site's launch there were more than 1,000 of these 'scrapbook' posts.
The NAA later rebuilt the site, and a couple of years ago they completely removed it. You can find bits on the Internet Archive & Trove, but I don't know how many of the posts were saved...
I wrote about creating the site here: https://discontents.com.au/local-heroes/index.html #GLAM #archives #crowdSourcing