I wouldn't take the "in an hour" thing too seriously. We all say that, but what it really means is that the basic idea is not that difficult to implement a prot

I wouldn't take the "in an hour" thing too seriously. We all say that, but what it really means is that the basic idea is not that difficult to implement a prototype for and see if our assumptions are correct. They rarely are. But to answer your question, I would always share my ideas with people who are interested. The details are probably too much for a casual conversation, so that's what I won't get into unless I know that there's a purpose for the conversation such as co-founder seeking, investor, idea feedback...