This assumes that you live in a low crime environment. Otherwise the increased transparency could easily be used by criminal elements for targeted crimes.
If it's shared in a corporate environment or anonymously, it shouldn't. I generally expect most of the people I work with the be in a +/- 10% band for my "peers", and +10-50% for my immediate management level, which my understanding is pretty accurate from the numbers I've seen.
On the US West Coast, variance is far more than that, unless you circularly define "peers" as people who negotiated the same level/pay as you.
The value of the stuff in your house is almost certainly in the same band as everyone else on the block.
You could have just internally open salaries
Once you have a widely available list expecting it to stay private is optimistic imo.