[eru]

How to do something about it:

http://www.economist.com/blogs/freeexchange/2015/04/land-val...

Of course, keeping an eye on the money flows themselves will help.

[to3m]

As an additional interesting (?) link, a (UK-focused) blog featuring rebuttals of common arguments against a land value tax: http://kaalvtn.blogspot.co.uk/p/index.html

[eru]

Thanks. A very interesting page. Alas, their proposal is too reasonable to ever get traction.