what is this media server thing you are referencing?

take a look at plex or jellyfin for example. these are media servers that can be setup to automatically organize your media library and keep track of what you have downloaded, what series you are watching, what episodes you have watched, etc. also like you mentioned they also provide some sort of streaming service where you can watch your media over the network without having to download it on every single device.
I'd also like to mention that usually downloading is done using an external software like sonarr or radarr that fall in a gray zone in terms of legality so be careful if you ever plan to go that route.

I just want to add that a good portion of buyers think they are "saving the environment" by buying an electrical car because it doesn't burn any fuel. However I was amazed when I realized that most of them don't understand that the electricity their car uses is most probably (around 94% [1]) generated using fossil fuels and due to loss of energy during transmission they are in fact less efficient than your good old gas burning car.

[1] this 94% is just what I remember from some years ago. seeing as countries and governments have started adapting renewable forms of a energy recently it's probably not as bad but still far from ideal which means the point still stands.

based on previous experiences I'd say there is a very high chance this will work.

You could probably add blood to that list too. I'm not sure it even applies seeing as sometimes it is not even possible to buy/sell blood and I should clarify that I only heard about this on a tech related stand up comedy. It made for a good joke nonetheless.

Thanks for the explanation. I just a have a question regarding the communication between lemmy and mastodon, In the "Fediverse" paragraph you included a visual representation that shows a connection between these two platforms marked with "activity pub". However as you have mentioned in the kbin paragraph there doesn't seem to be any way to interact with mastodon through lemmy. Why is that? Is it just a limit in the interface because of the different nature of posts (microblogs on mastodon and long posts on lemmy) or are there other reasons like technical issues preventing them from using activity pub and interacting with each other?