A super simple one for example is hivemapper.
It is a company that is trying to develop a decentralized mapping system to compete with likes of google maps and waze.
Effectively, you earn tokens if you contribute to the maps. Better data/images leads to more tokens. If you want to use the maps you use tokens to get access to them.
In theory, it provides more real time images than something like google streetview and should have better maps as well. The project might ultimately fail, but I think it is an interesting idea.
why not use lightning?
Why introduce a less secure, more ponzi prone token if your mission and product are so important?
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see what you mean there..
as an utility token, migth serve a purpose.. but no more than helping the maps