This looks like the Tobin tax:
http://en.wikipedia.org/wiki/Tobin_tax
The Tobin tax goes further by taxing all financial transaction of 1%...
Why don't we limit profits on loan as well by the way...
Anyway, many solutions exist in transforming financial transaction to a more ethical way.
http://projectavalon.net/forum/showp...8&postcount=20
Great idea!
Namaste, Steven