i used to smoke weed cigs all the time. before i turned 18, i used to clean out a cigs insides, do about 3:1 weed:tobacco combo. left the filter on. still got high as hell. so NORML, says it dosent work. so what. they say bongs are counter-productive. bongs still work. i dont know what norml is doing these days, but i KNOW for a FACT that cig filters still let you get high, and dont stop the high. i smoked around 200 weed cigs total, and each time, without fail, i got high, and each high was like a noob high after clearing a bowl.