1

What Crowd Sourcing?Examples:

– Wikipedia– Open Source

Software e.g. Linux/GNU Runs iPhone

– Google Search: Skip

• Everyone benefits

Source: http://en.wikipedia.org/wiki/Clickworkers

2

Map Crowd Sourcing: Hurricane Katrina• Forum Questions like: "Does anyone know about this block or this street?"

• Better on a Map, Created in an evening: “…Tons of markers and useful information”

• Scipionus.com

• Vandalism problemsSource: www.wired.com/software/coolapps/news/2005/09/68743 Image courtesy GISuser.com on Flickr

3

Google Maps: Skip• Not all countries

have OS or AtoZ

• Volunteers can map their city and upload to Google

• Video

• Open Street Map as well (non-commercial)

Images Courtesy GeoWeb Conference http://bit.ly/6DW8I

4

Importance of Mobile Devices: Skip• Twitter Snow

Map: Users twittered a code with a score for snow strength

• Google Earth Time Animation

• Problems:

– Population density, Sleeping, Scale

Images Courtesy Google. Video at www.youtube.com/watch?v=5bgrn17udUs