Hey Magic Mark
Anyone can log onto the next, and can find magic shops and secrets with hardly any effort.
What is the next, and how do I log onto it! Sorry, couldn't resist!
As far as the secret thing goes.....I think that the occasional "tidbit" gets them thinking. I find that sometimes letting them in on a secret that has little releveance to your routine, or ability (basic stuff for example) can work at times as misdirection for itself......they look for one slight, when you are really using another. I suppose it always boil down to "Why are you considering telling them?"
If it is with a fellow magi and it is swapping tips, etc....then great!
If it is helping a beginner..........then great!
If it is to discredit someone else..........not so great!
If it is to prove you are the man, and no it all..........not so great!
As you can see, I ride the fence on this, as I think that rigid beliefs on this can inhibit your learning, as well as that of others.......it must be a fluid decision, and be done for the right reason!