cause for such termination , limitation of access or suspension shall include , but not be limited to , -lrb- a -rrb- breaches or violations of the tos or other incorporated agreements or guidelines , -lrb- b -rrb- requests by law enforcement or other government agencies , -lrb- c -rrb- discontinuance or material modification to the yahoo services -lrb- or any part thereof -rrb- , -lrb- d -rrb- unexpected technical or security issues or problems , -lrb- e -rrb- extended periods of inactivity , -lrb- f -rrb- engagement by you in fraudulent or illegal activities , and/or -lrb- g -rrb- nonpayment of any fees owed by you in connection with the yahoo services .