You need permission of the instructor to post your class notes online; please consult each instructor before sharing or posting your notes.
Passed by the Sociology Faculty on 10/23/11:
"Consistent with the University's policy on intellectual property rights, it is the Sociology department's policy that teaching and curricular materials (including but not limited to classroom lectures, class notes, exams, handouts, and presentations) are the property of the instructor. Therefore, electronic recording and/or transmission of classes or class notes is prohibited without the express written permission of the instructor. Such permission is to be considered unique to the needs of an individual student (e.g. ADA compliance), and not a license for permanent retention or electronic dissemination to others."