This might not be what you're looking for, but this is a very old site that has never changed. It's a french language page call "perdu.com" which simply means "lost". The content simply translates to "You are here" with an arrow and an "X" to mark the spot. It's not usefull in any way, but it always makes smile.
I sent out my bictoin cash to a wallet and the transaction url gives me a 404. Coinbase posted this message on their page : "Partially Degraded Service: Outgoing Bitcoin Cash transactions are currently not being sent. Our team is investigating."
This is the brainchild of one the the founders of Savoir-Faire Linux. I was an employee of theirs and had to use this software for internal communications. It rarely works, crashes a lot and employees would crack jokes everytime we were told to use it. The idea is good. The current state of the app is barely useable. They just fired around a third of their employees (after promising to double in size).
Literally means "lift the shoulders"