Craigsmaritan
A person, who goes out of their way for others, to post an ad on craigslist of an item of some sort that they found lying in an alley or in the street somewhere.
James: "Hey, mike. Let me read you this free computer monitor/fax/copier ad I found on craigslist. It says, 'Just spotted computer monitors and copy/fax machine in ally at chicago and bishop st. behind the Noble Grape pick up if wanted.'"
Mike: "Now that's a true Craigsmaritan!"
Mike: "Now that's a true Craigsmaritan!"