Because a file was written and read according to definitions within the program code, there was no external data definition, making data sharing difficult and AD hoc reporting impossible.

由于是根据程序代码内的定义读写文件，没有外部数据定义，这使得数据共享很难且不可能进行专门报告。

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"It's becoming more difficult for file-sharing sites to operate without getting into trouble both from the authorities and also lawsuits from copyright owners, " Ernesto Van Der Sar, editor of TorrentFreak told the BBC.

BBC: FileSonic cyberlocker offline after piracy complaints

Even with a broadband connection and a sophisticated file-sharing schema like BitTorrent, illegally downloading and swapping movies is far more difficult than trading songs.

FORBES: Michael Noer On Digital Entertainment