Wow, I don't even know where to start. Where in the article was it mentioned that students copied homework? While you're at it, explain to me to how students currently share their entire homework (generally written in Microsoft Word) through Facebook Chat. Why would you think sharing homework is a bad thing? People generally do so to compare methodologies and answers with their peer's data. It's generally part of the learning experience.

Everyone in school/college/university shares assignments (albeit not all assignments are of the shareable type) to make sure they're on the right track, make sure they didn't miss anything, or to get a different perspective into a subject. If you didn't do so when you where in school/college you missed out on the opportunity to learn a little bit extra by means of poking into fellow student's minds.