You give the guy (good) free advice and get hazed for your effort. I play tennis - taught myself by reading a book. One of the best pieces of advice in the book, that applies to many of life's challenges, not just tennis: always change a losing strategy; never change a winning one.

I'm a capitalist but the greed associated with this hobby is truly sad. Please see recent Hard Rock Friday the 13th chip. Do you people really need the few extra dollars? Someone makes an extra $15-30 on the Friday the 13th chip by auctioning it on eBay after telling a frequent customer (who would certainly bring him much more in profits over the course of the year) that he doesn't have any more.