Hi Rhubarb,
Thank you for your response. From it, can I conclude that there is nothing I can do to "finish" uploading the file I want to delete, sooner?
I think I understand how Torrents works. I also think that there should be no reason why with 1000+ downloaders, there is not only one "Joe Bloggs" that doesn't have the capacity to use all my upload speed. I also understand that there are many other seeders than me, but still I'm having trouble understanding why would "Joe" disconnect from my seed(s) if I have the whole file, my upload is not maxed and his file is not complete yet.