Batch programming summary

So been there, done that, time to move on from batch.
But before that, a quick list of all the batch programming scripts already available here:

Variables and spaces
Using CD /D
The Boring Black Hole
Working with arguments, part 1
Working with arguments, part 2
Working with arguments, part 3
Using CON... or not
How to clear the log file
Getting the batch file path
Retrieving argument file size
Comparing files by size
Reading from a file: part 1
Reading from a file, part 2: looping
Reading from a file, part 3: looping, part 2
Using FOR /D
Making and calling a subroutine, part 1
Making and calling a subroutine, part 2
Using The Substring Equivalent
Creating a timestamp
Using setlocal enabledelayedexpansion
The difference between :: and REM
Getting file information
Using help to help yourself (part 1)
Using help to help yourself (part 2): publishing batch help information in HTML format

Batch programming tip#14: The difference between :: and REM

Both REM and :: are commonly used to "comment out" a line in batch files, so what's the difference between them?

REM is the true "Remark" command. In other words it is treated as such and interpreted.

::, on the other hand, is an invalid label (a label starts with a colon) and is therefore simply skipped.

What this means is using REM is slower than using :: because :: means the line is skipped and the next is interpreted whereas with REM the line isn't skipped in the first place.

Thoughts?