Originally Posted by
shroomwell
Haha gotta confess I am guilty of that..but when you spend 90% of your time flying outside of the U.S. it becomes a bit of a habit!
That's an acceptable excuse

But sometimes it's a regional guy...
From GEN 1.7 Differences From ICAO Standards, Recommended Practices and Procedures.
"The United States issues the separate digits of a frequency, inserting the word “point” where the decimal point occurs."
That part of the AIM is actually a good read, especially the differences in Chapter 5.