My most recent use was to get a feel for whether the Windows 10 Pro license Kinguin.com are selling (actual vendor is NextKeys.io). Reddit gave me the impressi

My most recent use was to get a feel for whether the Windows 10 Pro license Kinguin.com are selling (actual vendor is NextKeys.io). Reddit gave me the impression they are surplus genuine OEM keys. I paid AU$45 rather than AU$339. Mind you, if I change harddrive or motherboard I have to get another license, but I'd have to do that 7.5 times before I've spent $339. Went ahead with the purchase, activated by phone no problems. All good. Thanks Reddit. My other recent use was to get a feel for whether the diesel heaters for motorhomes being sold on eBay for ~AU$300 are any good, versus the name brand units at ~$AU2000. Yep, all good, went ahead with the purchase, no problems, all spare parts available. Thanks Reddit. Seems to work as intended, for my use case anyway :D To answer your question though, I actually don't know! I'm an expert in about four fields-- anatomy & pathophysiology, nutrition, metal fabrication and laser cutting / CAM of ferrous and non-ferrous metals, 2D CAD, but haven't really thought about looking at Reddit on those topics. Maybe I should, I might have something to contribute.