Cracking upIf you share the common preconception of traders as an unscrupulous bunch, you'll be interested in a discussion currently going on in the darker reaches of cyberspace. Concerning what one would do if one benefited from a substantial bank error, many counsel ethical behaviour - including one chap who says: "The next time your broker seems very anal about a particular issue? please consider this thread as a reason. Brokers have to set their own rules to the lowest common denominator". All very reasonable. But in case you were thinking that the sharks have departed the pond, consider the following...