Maybe. But with simple search tools we should be able to sniff out
papers anywhere on the web by keyword search. Rooting out real
intellectual dishonesty--passing of others' work as one's own rather than
ignorance of citation strategies--should be a lot easier rather than
harder if students start downloading whole papers or large chunks.
This of course doesn't address the vast changes to the whole idea of
intetextuality and plagiarism in electronic writing spaces, but tbat's
for another day...