Some good points Kaneh, I've never been very careful about pollen either, but then again, I don't sell any of my crop and don't mind the odd seed in my bud at all, in fact I prefer to smoke plants that have produced a small number of seed as i find they have more complexity to the effect. I often pollinate some lower buds on a plant to make seeds as I like to preserve anything promising and you can tell the difference between that and a plant of the same cutting that hasn't been pollinated.