We are a community, not a democracy. How dare he who renounces the free flow of information. Jut because it took you half a year to find the route you exploit, doesn't mean you have to try your hardest to keep it a secret. If players want help, help them. If you don't want to help them, don't criticize others for doing so.
In RP terms... sharing trade routes seems logical, and with that, I give you mine: