Well I have just found a planet an hour away from me with no defense and level 16 mines. Has about 50k of each resource aswell and the player who owns it is inactive (i.e it will keep supplying free stuff).
Basically I am going to send as many transports I can to it before a stronger player tells me not to (I think it MUST be being farmed by another player).
Free and easy resources.
Edit: If inactive it doesn't keep producing?
Basically I am going to send as many transports I can to it before a stronger player tells me not to (I think it MUST be being farmed by another player).
Free and easy resources.

Edit: If inactive it doesn't keep producing?