LOL, well, I do not wear a skin suit or TT helmet on my junkets, it's true! ;)
And, Mr. Silver, I think I agree with you on the maybe 50/50 split of responses. I admit my own acknowledgements of other cyclists can be pretty subtle if I'm really struggling up a hill, or working hard, or really just concentrating to myself. I do try to make some gesture, usually, and definitely if someone says something to me first.

