Thanks to everyone who responded to my query about newspapers that assist local reuse programs. For the interest of others on the list, posted below is a brief summary of what I found out. Both are no cost, limited to 15 words, and printed on a space-available basis.
People list all kinds of things, print their first name and their phone number.
Nancy reports that it has been quite successful. Performs a valuable service for the Boulder, Colorado area. Several weeks before the launch of our community reuse web site, everyone involved in the project was shocked to read an editorial criticizing the municipality for getting involved in the 'classified advertising business'. The paper simply misunderstood the project. As with other reuse initiatives of this kind, all listings on the web site are 'free', and only 'wanted' items or items 'to be given away' may be listed.