abdon 

Let me help you make up your mind. Say you post something for sale. you'll get about this many of these but no follow ups from there:

"is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?" "is this item available?"

The first line in my ads is "'is this item available?' default messages will be ignored". Which means I still get about half of the number shown above. Trust me, you do not want to deal with people that can't even read the first sentence of your ad. If they actually responds after that, they will ask you just about everything you already bothered to convey on your ad, which of course it was something that meant it wont work for them.