I have an idea which I need to develop. In order to do this I am going to have to get advice from someone who who knows the field. I dont, and I dont know anyone specifically that does. I will have to speak to a 'stranger' but am worried they will be able to take the idea and run. Is there any way I can approach this without getting stung. I dont want to go into the specifics of the idea except its an idea for a search engine.