It’s maintained by an active contributor over at /r/flashlight. He does frequent giveaways there, using the money collected from the site’s affiliate links. It may not be a comprehensive flashlight database, but it is still a pretty good overview of what’s available from ~40 brands at Amazon.
I personally find it a bit disappointing because ~95% of the lights in my collection aren’t listed. There’s nothing from Emisar, Lumintop, Sofirn, Fireflies, Thorfire, Convoy, Jaxman, Astrolux, Mateminco, Imalent, Reylight, Okluma, Sinner, or BLF in general. I’ve asked him about these, but generally we just end up arguing since we have very different ideas of what the site should be, and I shouldn’t expect anyone to follow my vision instead of their own. That would be silly.
Regardless, a comprehensive database is extremely difficult to maintain, and may not even be very useful. So it might be the wrong goal to aim for. I’ve found that, for most purposes, it’s a lot less work (and just as effective) to use a curated short list of what’s popular lately… such as /r/flashlight’s Arbitrary list of popular lights maintained by zak.wilson. That list has the answers to most people’s questions, because the questions mostly boil down to “what’s good”.
