i am a little bit angry seeing you tell iToke that THC isnt heat activated/released. this is what i know, cannabis whether its strain be indica or sativa has tetrahydrocannabinol or "THC" which targets the cannabinoid receptors, as the main chemical reaction, this has a chemical in itself called dronabinol which is the psychoactive ingredient.
all forms of cannabis have ways of releasing the THC in them, and i assure you that drying your buds isnt "activating" the THC in them. drying your buds is to remove moisture from them, so they can be stored successfully for longer periods of time whilst being transferred around the world to be sold, and just to dry them out to smoke. but to actually have the THC released from the cannabis to my knowledge is as iToke said, from mixing it with a fatty substance, such as butter which breaks down the cellular walls and allows THC to enter the bloodstream. obviously you can smoke your buds too as everyone will agree, this does something! and finally you can also release THC by mixing it with an alcoholic substance.
all this is not to say that eating raw buds wont do anything, but it wont get much if any THC on your cannabinoid receptors, it will however, enduce other chemicals that are in cannabis other than THC which will give some effects. so you will feel something from eating your buds if you have enough, but the effects are greatly reduced and as strikinghigh55 said, much of the effects are absorbed by the liver. so eating your buds will eventually give you a lessened effect, but the biggest thing you will probably notice is a stomach ache! so i dont recommend!