I am trying to create a typology of commonly used message themes conveyed in energy saving ads and public service announcements (like social responsibility, cost saving, danger of natural catastrophy,...) and I could use some help. Here are my questions: Firstly, I was wondering if this was done before by anybody else. Secondly, I am looking for as many energy saving TV and print ads or PSAs as possible (some sort of database would be perfect). I will be grateful for any piece of advice! Thank you!