I like it all. It's the heart that counts. If you want to yell to me "You're almost there!" halfway through my race, then I thank you mightily.
One thing that a woman at about mile 25 yelled to me on my first marathon was "Okay #1944! This is your day!" She really sounded like she meant it. Like she knew me. It was pretty awesome.
I always make sure I try to say "Thank you!" back to the cheerers, or even the cops or course marshalls as I run by.
When I cheer for other racers at the finish line, after I have finished my race, I usually go with "All right!" and clap. I used to yell "Yeah!!", but that seemed a bit crude to me. I may be worrying too much, but I did not want the female runners to think I was yelling "Yeah!" about some of their "jiggly parts".
Oh well...
Hey, Urbster...Thanks for stopping to cheer!
Paul