Indeed. You're taking the effort of making it once, but the collective readers are taking the effort of reading it tens, hundreds or thousands of times.
The blackberry argument is exactly the place where open source is the answer. I have a python script that I fully understand (and wrote much of it myself) grabbing email data off the internet, and only it knows my password - I wouldn't dare trust proprietary software with something that sensitive.
From equating downloading to stealing to praising Lord Mandelson and his guilty-before-proven-innocent approach to copyright to the anti-technology sentiment, this seems like an article written by the RIAA (or local equivalent).
We could always make a compromise where people who choose to moderate can't see scores. It would be trivial to circumvent but it will deter 90% of people, and here that's 90% as good as deterring 100%.
I read the student worksheet. The RIAA stated that the cost of sharing a song online is 99 cents. That basically kills their arguments against Thomas/Tenenbaum.