id never use my phone number in an ad on ebay or anywhere on the net. emails are safer. why leave a phone number where the public can lurk and see without you knowing? people can track where you live and who the number belongs to, even if they never call you or contact u in any way. its called lurking and being nosy and its an easy task.
same way when people post all their business on FB and get busted by ex's, court systems, family members, rapists, idiots and anyone else.
Sure you can block a number AFTER someone calls you...but now they have your info...not a good idea.
IDK, i guess being in the law system i think different.