I really like the idea of these. Basically it's a system running on xDai chain that allows easy construction of an NFT to prove attendance at a place/event. As always with Web3 they will likely have multiple use cases. I'm toying with the idea of creating one for this feed for our top users as a fun project, but I'm not sure about the criteria yet.
"Not only can POAP serve as a souvenir collection, something you can rifle through later and recall the pleasant memories and experiences of your past, but they can also serve as gateways. Perhaps earning you entries into private clubs, or advanced seminars which require previous knowledge and attendance. They can serve as gatekeepers, allowing you to secure your own events, chats, servers, etc by only allowing an elite few in possession of whichever prized POAP(s) you decide warrant acceptance into your club."