As someone who's used freegle/freecycle in the past and knows no-shows are an absolute pain in the butt, how about making the person offering an item specify some times that others can pick up their item before they choose a preferred collector - even if it just "weekday evening after 6"? And anyone who can't make those times are just out of luck? Anyone who can picks their preferred option, and the offerer makes a choice. If no-one replies, then the offerer has a chance to expand the number of time slots offered?
This gets my vote but would add a collect/deliver option. Personally I'd rather deliver that wait for the collector to turn up so I can not have to worry about being in.
