My favorite research material on trust - some recommendations

I started researching on trust in digital media a few weeks ago to prepare an upcoming project and I'm really excited about the amount of great basic material.
Fortunately, these research works don't answer the questions I have in mind but they are anyhow highly recommendable.

I want to share my favorites:

• Edelman Trust Barometer - annual report of a worldwide operating PR company, based on worldwide research and covering trust in general
• People, Profiles & Trust: On trust in web-mediated social spaces - big (and quite academic) theoretical framework, supported by interviews with trust- and reputation-experts from startups
• When we start trusting strangers - by Trend Stream, Tom Smith, a global social media study quantifying adoption and trust level by channel, country and product category, part of the Universal McCann social media studies

They are all available as free downloads, so have a look - or stay tuned here to learn more about trust, media and communication