Digg Website
Social bookmarking sites such as Digg are used to gather research on different target markets.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"All sizes | Digg v4 homepage | Flickr - Photo Sharing!."
http://www.flickr.com/photos/4braham/4755745167/sizes/l/
Flickr
CC BY-SA.