My pet peeve is the motormouth types who clog the CTAF with
personal chatter that has little or nothing to do with the
safety of flight. Some of these folks aren't even flying -
and seem to think the CTAF is a personal CB channel. The
temptation to become "voluntary NORDO" is quite strong at
the airport I have in mind.

Equally annoying is the Class C scenario in which you can't
get a word in edgewise due to the congestion on frequency.
Sometimes it is simply too many aircraft coming and going at once.
Other times there is the stuck mike or the pilot with a limited
command of English, or somebody who takes 100 words to say what
a the average person could say in ten.

David Johnson