I believe diversity tends to bring stability.
I'd like to write a loose overview of 10-20 economic systems and ideas that might help to liberate our economy. Virtual currencies, micro-lending, local currencies, alternatives to paypal etc.
I don't believe one sole system has the answer. I'd like to cover systems with at least two years track record, and with no gaping flaws.
Kiva, Kickstarter, Bitcoin, Dwolla, LETS systems, Barter Club... I have plenty of ideas myself, but the field is so big I might have missed something.
Are there any other strong contenders?