I believe it's a case of the students wanting to challenge the whole notion of "We want to stop you from doing something wrong, and so we're going to (do something wrong ourselves, and ...) steal your work and the work of others to build a hugely profitable business acting as the plagiarism police."
Teachers are using college-wide blogging tools or free blogging services for different disciplines as a way to address e-portfolios, audience, publishing practices, copyright and plagiarism, authentic writing and writing in a digital age with hypertext.