So... What is yarn bombing?

Yarn Bombing is a type of culture jamming...according to ArtLex.com

"Culture jamming refers to forms of art and other activities involving social agitation. Culture jammers take a number of sociopolitical issues as their primary focus, including media literacy, consumerism, television addiction, television violence, pollution, North American social laziness, use of sweatshops, and various hazards of corporate dominance of media, government, and daily life."

Q1. How is Yarn Bombing like Graffiti?

Q2. Why do people engage in Graffiti?

Q3. What makes a good yarn bomb site?

Prompt... create a list of objects or places in your day that would make for good yarn bomb sites.