Adding a phone number or email address to your classified ad or inquiry might seem like a good idea, but it presents a strong possibility that your contact information will be harvested and used for marketing or spam.
Even though the moderating team removes personal contact information when we run across it, remember, copies of posts can linger as search engine hits for a long time
Protect yourself by using the Private Messaging (PM) system and being sure your preferences are set to notify you by email if there is a new PM. (Be sure not to reply directly to the Notification, however. It won't go back to the sender: you'll need to follow the instructions to respond by PM, and you can then elect to share your contact info directly with the trusted recipient.)
Alternatively, you can adjust your settings in Messaging and Notification to Receive Email from Other Members to permit forum members to email you through the forum, thereby insulating you from the Spamming robots that spider the web.