I just found this on my local OfferUp site. I'm assuming that everyone here has one of these in their wood-cutting arsenal... Sidenote: I love (hate) it when people say "chainsaw blade"...
I have one, and they are seriously dangerous as they are, but good for quick stock removal. I would definitely have the guard on when using it. A hand slip into that is serious flesh removal.
Wow, I really intended my post to be humorous. I'm not sure if that got lost in the subtle nature of my sense of humor. I had no idea that this type of device even existed. It just looked to me like a horrific accident waiting to happen (maybe you recall the father who was killed in front of his young children after attempting to lower a stump using an angle grinder with a circular saw blade mounted on it). I'm no "safety ranger"; I've done some ridiculously dangerous things throughout my life (I call them "calculated risks" ), both in the woods, and while in the USCG.... I'm no physicist, but I can just imagine the kickback potential there... That being said; if you have/use one, then good on ya...
The seller obviously used it to cut several normal sentences down to one long rambling incoherent run-on sentence.
The seller has welded or glued the chain onto a 4 inch diamond blade. WAY more dangerous than the ones already made to be installed on a grinder like in post #2