Hey Jim7... glad you found the topic interesting. I did too. I don't know enough about that site to endorse it one way or another, but it seems pretty legit. I just managed to look something up about concrete arrows after I saw a news video about the subject.
I hear you two regarding forgetting stuff. I am going to go ahead and agree that it is "informational overload" in my case, and I am not going to let my wife and kids have a say on the subject if at all possible.