I think you can use one of the techniques developped by Ushahidi platfrom. Here is the site (if you dont already know it), it might be of interest: http://www.ushahidi.com/
thanks. very useful
Hey Darren, I'd list what I know so far, but I think it's way more efficacious to tell you about Tactical Tech, a nonprofit in the UK that puts out toolkits for nonprofits for free. They're amazing and I'm happy to give them a shoutout. They have a toolkit especially for nonprofits looking to map geographically: http://www.tacticaltech.org/mapsforadvocacy
Hope that helps!
This sounds promising. Yes, that would be great if you are willing to contact them and get us in touch.
And thank you Ahmed for letting me know about Ushahidi!
U r welcome