Not sure. Do you share your network with people?

Your public ISP IP isn’t typically static unless you pay for a static address. So guess you know what the last guy was doing.

Yeah, use a VPN and make sure it and your network settings are configured properly. I’m running my stuff in a docker image that’s already preconfigured to prevent IP leakage with VPN support.

http://iknowwhatyoudownload.com

https://ipleak.net/

Make sure your downloads aren’t leaking.

Using memmy you can do the same. Top right corner, click the 3 dots and click Block Community

Not really. I usually just check the subscriber count and pick the larger one. Unless if they’re about the same, then I’ll sub to both. Just means I’ll see more content. Might be a bit of overlap sometimes, but not always.