I agree with you about the reaching a "threshold" of users. Creating a large base of returning users is difficult. I am interning for an indirect Craigslist co

I agree with you about the reaching a "threshold" of users. Creating a large base of returning users is difficult. I am interning for an indirect Craigslist competitor. (zealousgood.com) We help nonprofits get/receive in-kind donations. Instead, of putting up a free item on CL, one can pick a nonprofit to donate it to. Many people view CL as a the simplest solution. It has the least resistance. Regardless of its cons, people continue to use the system.