Farming is when you hit a person many times. It's debate the amount but more then 10 hits in a hour. There is also party farming which is just when a person hits a parties.
Depends on how much the other user wants the items, but my guess is no more than 10million because all of these events have passed and owning these items has no point anymore.
How to get rid of rehab_theaussieredsox? He's an active farmer. He keeps on hitting poor noob and farm them like hell. How to make him stop?
The point of war tax is to create a pool of money that will be distributed among the winners of the war.