What we need is a Clash of the Clones Strategy Guide.
Attack RANDOM people - always. The payout for RANDOM attacks is 140exilir for castles, and 70 for buildings.
(Attacking targeted friends pays out less than half that amount.)
Attacks are good for both - even if you don't log on, if your house / castle is lost, you still get points.
Attack as many buildings as possible - I apply 2 nerds per house.
Once you have the full compliment of buildings, upgrades, etc, leave it - let people attack, and give them the points.
(at least that's my plan once I've got all the rewards)
And if people on your friends list aren't active / don't have castles, remove them, and add people from the current 'add me' list.
