collect, harvest, or publish any personally identifiable information, including, but not limited to, names or other account information, from the Service;</li> <li>conduct any commercial solicitation purposes without Piazza’s written permission;</li> <li>make available viruses or any other computer code, files, programs or content designed to interrupt, destroy or limit the functionality of the Services, data, or affect other users;</li> <li>engage in conduct or post User Content that is libelous, defamatory, abusive, threatening, harassing, hateful, obscene, offensive, humiliating to other people (publicly or otherwise), or otherwise violates any law or right of any third party;</li> <li>degrade or discriminate against others on the basis of gender, race, class, ethnicity, national origin, religion, sexual preference, disability, or any other sensitive classification;</li> <li>