There have been bell-ringers in the streets for many years calling for the end of the real estate sales profession as we know it.

Now we understand that the very real threats are coming from all sides. Just as there really isn’t a “private life” anymore (short of unplugging yourself from the internet), there is no safety in continuing to do your job as you did before.

“Big Data” will erode the limited access to information that long has been the ...