Posting items for sale, that have ALL the info in the add, and then having responses to the adds asking for answers to the very same info already posted, because they didn,t take the extra 20 seconds to read the complete add. Also, committing to buying the item in the add, and then not showing up, or letting you know that they changed their mind. If I am buying something, my word means a lot to me, if I commit, I,ll be there, or let you know well ahead of time that I cann,t make it. Amazing that everyone is on their phones 24/7, but aren,t polite enough to send you a quik message that they changed their mind. Kinda a sign of the times.