I say hi to fellow bikers on trail, and most respond in kind. Unfortunately, the issues I am running into are people who do not know proper trail etiquette - and the other day when my DH and I gave an audible “on your left” to pass a jogger she actually cussed at us. And for the past two weekends we have had a racer barrelling through a 10mph trail in our local park with earbuds on and he does not even bother giving an audible - just flies up on you quick and darts in and around walkers and other riders at a high rate of speed. He has frightened seniors walking and he nearly hit my bike in his haste last weekend. I guess he was “in his training zone” but that particular trail is a family trail with lots of small kids and seniors on it as well as bikers and rollerbladers. I say its o.k. to greet who you want and if they respond in kind, fine. If they ignore you, fine. But if they ride recklessly and almost run you off the trail, then that is another matter altogether. I was also raised in the south, so I am the friendly type. Just today we met a very nice fellow biker who told us about two more paved bike trails we did not know about. Our conversation was started with a “Hi, how are doing?” It takes all kinds to make up the world and everyone has their particular comfort zone when it comes to greeting others, but I have seldom seen someone not return at least a smile.