No kidding! I frequent several forums and I can't remember the last time I saw someone resurrect a 4-year old posting. But since it is back...
I regard CRH the same way I would extreme couponing. Like CRH, there are a lot of people who extreme coupon that guard their knowledge like it is a big secret that no one else should know about. If you want to see this in action, check out any of the couponing forums out there and look at all the downright nasty comments about the TLC Exteme Couponing show. There is this idea that if the secret gets out that everyone will be doing it and ruin it for everyone.
However, what these people (both in regards to CRH and extreme couponing) fail to realize is that because it can be a lot of work, most people won't bother trying. Of the ones that do try, many will be disappointed when they don't score any silver in the $4 in halves the teller at their bank had or even in that first box of coin and quit. Very few will stick with it long-term and create competition for us.
That said, I am not nearly as free talking about CRH to people I know as I am online, just because I don't want the inspire local competition. This is the same reason that I don't discuss where I hunt on the forum. I've told close family about my CRH activities, but that's about it. But wouldn't you know that of my family members I have told (most of which have seen my finds), none of them are CRHers now. They will just see my finds and go "wow, that's cool" and think nothing more of it.