You must also not post any User Content that contains proprietary information, trade secrets, confidential information, advertisements (other than Job Advertisements permitted by this Agreement), solicitations, chain letters, pyramid schemes, investment opportunities, or other unsolicited commercial communication (except as otherwise expressly permitted by us in writing), or encourages or causes spamming or flooding.</p> <p>You are prohibited from posting any User Content containing official identification information (whether your own or of another person), such as social security number, passport number, national identification number, insurance number, driver’s license number, immigration number, or any other similar number, code, or identifier.