Originally Posted by
Shoestring Flyer
You gain virtually nothing. No situational awareness of other traffic 'cos everyone is on a listening squawk and no chance of being told of any other traffic.(Under a Basic Service they don't have to tell you of seriously conflicting traffic but mostly they do).
The only people who gain from Listening squawks are ATC.
Does that represent a problem for you?
The main reason behind this is that ATC might be able to prevent an airspace bust and you subsequently having to explain yourself to the CAA and/or the courts, or worse.