This.  We don&#x27;t need a slew of startups to solve this problem; it&#x27;s called talking, and it can be done via any of several existing {meat,cyber}space communications channels.<p>(I&#x27;m hardly a Luddite; rather, I think there&#x27;s a lack of appreciation for basic interpersonal communication as a powerful technology in its own right.)<p>I don&#x27;t remember where, but in recent memory I saw an article about an apartment building where residents would mark their doors with icons representing appliances&#x2F;tools they were willing to share - a simple solution for an easily solved problem.  (See also: rideshare boards on campuses, bulletin boards and flyers in local shops, local community centers, etc.)