Why Is Arizona State Blocking Change.org?

Arizona State University is blocking access to Change.org -- a popular site for political activists to generate support through petitions and education. Some activists are accusing the university of censorship, and demanding that access be restored. They note that one of the petitions currently active at Change.org is critical of Arizona State, and says that a "corporate culture" is resulting in educationally unwise decisions at the institution. Arizona State released a statement in which it said that the content of Change.org was not at issue. Rather, the university maintains that the site is a source of spam, and that spam frequently contains viruses, requiring the university to block certain sites.