I could be wrong, but I thing the idea is that Twitter is immune to censorship, so no matter what sites get taken down, file sharing can live on in 300 baud. Or something.
...Yeah, I don't really get it either.
Well, it does say "experiment". But I think the point is summed up in this line: "I believe that piracy will always exist". The OP is showing that data is so malleable that no matter how many Megauploads you take down, there will always be a way to share it, which seems obvious to us at HN, but to a layman this might be a little more eye-opening. Or maybe he was just fucking around over the weekend and wanted to find the most ridiculous possible way to send data.