as long as you don't vape that shit on too high of heat, i like to do mine so it's light brown, not too dark, and then forsure SAVE it in a jar...i made some butter last week with 20 grams of volcano vape poo, it was pretty dank butter, not the best of course, but did the job, put me and my girl out for the night and she had to get up at 9 am, she was groggy and stoned still, haha, i think we ate too much, i just put a ton in some stir fry
i wouldn't advise smoking the leftovers, not much of a high and tastes like utter shit...i also think the oil would be pretty nasty, especially on the lungs, so i'd say make butter, it's a really Easy process if you've never done it...
http://volcanotips.com/volcano/volcano-vaporizer-leftovers-butter/, i use that recipe except i like to simmer for 3 or 4 hrs on low heat instead of boiling, i think that can cook out some of the thc..peace