Great questions! Will try to answer based on what the serious RV community seems to agree on:

The best way to use it? There are many stories on locating missing persons, for obvious reasons that can't be done blind, it seems to default to the natural and/or trained capabilities that the viewer has. The military style seems to be more accurate, and different from the way psychics have done this through the ages, structured training should do that.

About being viewed: Actually good viewers can make a very good living if they are good at corporate jobs. Of course no one knows to what extent this is used, but I would not be surprised if its massive!

And yeah, if you're a likely target you definitely need to protect yourself! The Soviets simply placed their really sensitive sites as close to, and if possible in the middle of things like a market or a fun fair, that way there is a lot of things that can throw an inexperienced viewer off, reporting the most vibrant things from the location rather than the boring rooms hidden this way ;-)

For online projects... Maybe this is what shitcoinery is about? Cloak your project in an insane crypto project with a million insane influencooors!!