I've found it's actually better to list things for a small price than to try to give it away for free. When you list for free, tons of non-committed people contact you and it's too difficult to hold for someone who ends up falling through. And sometimes you upset the beggers who think they claimed it first. When there's at least a small transaction price, you have a much better chance of getting a serious buyer.

Listing items for a sixpack of their favourite makes for friendly, casual interactions. And you try out new things!

God forbid you have to interact with white trash in order to get rid of a set of 3/4 used tires. /s

Getting rid of something for free is such a quick transaction that IMO complaints about the people you're transacting with aren't really meaningful/valid.