It's a art installation that allows you to buy likes on Instagram, Facebook, etc. Really interesting idea, shows how disposable those things are. It's amazing what people will do in order to get a couple of rows in the likes table of a social media website.
Don't get me wrong, I very much enjoy this kind of obstinate reductionism and we don't remind ourselves enough that this is what driving lots of our interactions online.
However, I will just add a slight counterpoint in that my bank balance is, at the end of the day, "just a bunch of rows" in a database and, to be perfectly honest, that is somewhat meaningful. :)
It's funny how easily can "unsavoury botting and spamming" become an "art installation". Also makes you wonder what exactly is difference between "art" project linked above and like/follower vending machine (https://www.vice.com/en_us/article/xw8yv3/russian-vending-ma...).
personally i think this project does a great job of posing questions about what it means to be successful on social media.
If you left this for a few months, the whole case would fill up with coins, and that arduino certainly isn't going to work so well immersed in coins...