Many jurisdiction, including my own, have the power to throw people in jail for giving unlicensed legal service.NOTE: This information is not legal advice for anyone in Virginia, and the Virginia State Bar may view this post as legal advertising.

rent one that's very powerful. 

She was on a waiting list to be allowed to rent the unit and had been on the list for years but because of an "old boys club" of board members who kept voting themselves back into power they kept allowing select people to have the privilege of renting their units even though they were sitting vacant.

@Wayne Brooks I know the banks are powerful but I wonder on what basis they do that when the law is quite clear "will be sold to the highest bidder for cash in hand".

The power and predicability of receiving payments like credit cards with (cheap) ACH-like fees makes it standout above the rest.

I also am starting to use it and it can be powerful depending on the type of investor you are

I just got home and a little light on one of the power outlets in the kitchen is blinking red.

So someone in house A is in the kitchen, washing a dish, looking out the window above the sink only to see someone in house B doing the exact same thing.

PoE means "power over ethernet".

They have the power to save you thousands or cost you thousands.