A family member selling his vehicles has had some individuals email/arrange time to come to see a car then forget or not show then later contact again to inquire about it. A couple of people wanted two cars (put up on different months) and on the first visits, both individuals offered less than was asked for. But eventually they budged a little upwards on return visits and seller sold the cars to them.
I guess some people want to test interest in alternate forms of barter/trade instead of cash. It's not like the ones asking favours on delivery to spots close to them/on certain day/time are offering the SELLERS gas money or time money for your effort to accomodate them. Yes, there are people who want stuff but don't make the effort to benefit the seller in the alternate offer. So if you sell on Kijiji, know your limits and say "sayonara" to the ones that just don't understand NO.
BTW, it might help to alert family at home if strangers are calling the family number to ask about stuff you posted. Sometimes I have been unaware that something is posted for sale and I have to talk to strangers without being in the loop that they are responding to an ad or arrangement with seller. Have had words with the seller about those cases. I am willing to take contact information but if I'm not a car gearhead, I wish the caller to understand that I said I don't know and trust that s/he will get a return call at seller's next opportunity to do so. (rant over)