People are asking what land value taxation is, which given the attention it's getting is a fair thing to do.
One explanation is here. I don't agree with it all, but it's a clear expression of the main issues.
Wikipedia has a spin on it as well, here.
And Jerry Jones from the Labour Land Campaign has a longer version here.
In all cases I have some reservations about the optimism and scope suggested - but equally think LVT has to be a component of a future just tax system.