If you have a lot of something that is valuable to your general downline, then YES. But, don't try to offload some crap that no one wants, right? Better yet, if it is business related free stuff! Or better yet, use the product as a reward or prize for a contest you can run to motivate your crew. I wouldn't go out and spend money on incentives, but if you have it already and it's seen as valuable to your downline, by all means, go ahead!