LostXOR

If you're on Android you can use yt-dlp in Termux. A little inconvenient but it works.

Rocks exist that are billions of years old, so clearly some things can survive for longer than a million years. And if we don't restrict ourselves to the Earth, something in a high heliocentric orbit could last many billions or perhaps even trillions of years.

Relevant xkcd: https://xkcd.com/2914

I wouldn't say five seconds before totality is boring; you can look up and see the tiny sliver of Sun as it winks out of existence, and see shadowy ripples on the ground from differences in air density. But that's still nothing compared to totality.

Of course, the point of a backup is that it's not your only copy. And I don't worry about making backups while I'm traveling, as nothing I have is so critical that losing a few weeks of files would be devastating.

RAID isn't a backup. It only protects against one mode of data loss, disk failure, which is probably the one the average user should be least worried about.

Cloud backups are fine as an absolute last resort for if your house burns down and you lose all local copies of your data. But you should never trust a cloud service to keep the only copy of your data. And you should absolutely never store your data unencrypted on a cloud service. All it takes is one undesirable file (say, a movie you torrented) making its way into your backups for your account to be terminated.

I think deleting posts is an important feature, but it should only remove the content of the post, not hide the associated comments. The post is created by the OP, so they should be able to remove it, but comments are created by other users and so there's no reason why the OP should have the power to remove them.

Orbital datacenters sound like the answer to "what is the absolute worst place it is theoretically possible to build a datacenter?"

The problem is that would be incredibly easy to bypass at multiple levels. You could set your age as >18 when configuring your device's account (they don't check ID) or modify the OS/browser/client-side webpage itself (the latter of which a simple browser extension could accomplish).

That car looks like it just disintegrated.

Don't leave us hanging, what are the results?

The Kansai International Airport filled about 180k cubic km of land for about $15b.

Actually, you're wrong. According to the airport's Wikipedia page, the volume filled was 180 million m³, or 0.18 km³. Taking your numbers of 8 million km² and a depth of 3 km we get a volume of 24 million km³ for a cost of $2 quintillion. That's nearly a third of the US's total defense budget!

Also, the US's total land area is 9.5 million km², so this would require either stripping the top 2.5 km of ground from the entire US, or digging the state of Wyoming right down to the mantle. (I vote for the latter; who even lives in Wyoming anyways?)