What people upload from me tends to change on a weekly or by-weekly basis depending on what new files I got.
I don't think that people stop downloading the files but when more and more people have them, there will be less need for people to be downloading this file from you.
I allow 4-5 slots for uploading and very often these slots are uploading the same file until something new comes along, then all 5 slots will be uploading the new file instead.

When files are being blocked you will be flooded with fake results instead of the real ones. (Between 10.000 and 25.000 results)
Just try looking for the exact title of a new movie

BTW yours is not the only copy of this movie. It's under other filesizes as well

You are right about people changing the name of the documentary though.

As a matter of interest I tried searching for both filenames.

Loose Change: 11 Hosts
Flight 93: 45 Hosts

But since it is the same file limewire will download from all the hosts