1. The document discusses the rise of participatory media like Flickr and whether this represents a "Web 2.0 moment". It explores how Flickr encourages sharing of photos and personal information between users. 2. A case study is presented of an Australian Flickr group where a user uploaded old slides of Brisbane from the 1950s-60s, prompting another user to take new photos of the same locations and compare changes over time. 3. The author Jean Burgess argues this type of activity on Flickr demonstrates "vernacular creativity" and shows how digital media allows ordinary people to engage in cultural citizenship by representing themselves and their experiences.