The most elite trackers perhaps.

Trackers on /r/opensignups ? Nah they open their doors to the public every now and again.

Would not recommend it to anyone who can’t dedicate a seed box or machine uploading torrents most hours of the day every day. It’s possible to do it without those but difficult. With them it’s merely a matter of using free leech and building a buffer up as well as taking advantage of points systems to get free upload just for keeping torrents seeding even without uploading.

If you only ever grab free leech then all you have to worry about is meeting seed time and activity requirements like logging in every 90 days.

An old computer with an external drive. A raspberry pi, a nas that can run a BitTorrent client. Any would work if one doesn’t want to pay for a seed box. (Most trackers ban shared seed boxes though so you will have to get dedicated)

No.

HDMI does have a feature called Ethernet over HDMI that in theory could allow that.

Thing is though it’s literally never been implemented in anything. It died because cheap WiFi became common.

For it to work you’d need both the TV and Chromecast and HDMI cable all to support it. It’s not uncommon on cables and a surprising amount of them include it in features list (probably to trick low info people).

But I believe that’s a hardware design thing so not something even a software update could enable. It costs extra money and they’re already paying for a WiFi chip so why bother?

Just FYI. Comments nearly exactly like yours on Reddit were used in copyright troll lawsuits against ISPs as evidence they didn’t do enough to enforce copyright and were negligent and legally liable.

Further when that didn’t work the copyright agency sued Reddit to try to unmask the identities of those people to bring legal proceedings against them to coerce them into testifying against their ISP at threat of being in trouble for their activities. Reddit was big enough to fight off the lawsuit luckily but be careful.