I'm new to trading, so please correct me when I'm wrong, but I'm wondering why traders seem to make such big secrets of their strategies? Other programmer's forums are full of source code snippets with which people explain and exchange ideas, but I see almost no code here, except from what I've posted myself. When someone posts "What do you think of this strategy", I would expect a script of that strategy, but instead there's only some performance figures. As far as I understand, the usual fear is that the strategy might expire when published, or even, heaven forbid, that someone else might make some money using your idea. But given the trade volume today, posting strategy ideas is not likely to cause expiration. And the disadvantage of this secrecy seems to be that all work alone and don't exchange ideas, and mostly don't accomplish much. I was told that few traders today are able to get a living from automated trading, although that seems not be too difficult. We could at least in the last months live without problem just from profit generated by strategy tests. Maybe all would benefit from a more open approach - or what do you think?