The world needs a new source of energy, an unspillable source.

Is it true that an item left plugged into an outlet will still continuously pull electricity when its not on?

Any item from a light/lamp, fan, electronics, appliances, etc. If it is only plugged in but not on, does it in fact pull electricity still and if so how much? Does it make an actual impact on your monthly bill? Would it be good in conserving energy to unplug these types of items when not in use?
Maybe another way to word it, will it continue to use electricity (pull) even though the item is not turned on and is only plugged in?

I ask this because recently on our companies internal internet page they asked what if anything, people were doing to conserve energy, protect the environment, etc. Just as part of the question of the week type set up. Someone answered that they were unplugging items that weren’t being used so as to not continue to use electricity since the item was off. Just curious.