I had a previous bad experience with a plumber, and decided to find a more scrupulous person to fix the half-done job. I decided to try out thumbtack, and posted a brief description of the work. Joel was the first of 5 plumbers to reply within the hour.
Joel showed up the morning of the job with another employee and reviewed my plumbing issue in detail before going into the crawl space with his associate to double check the situation. He came back out, described the problem, offered short and long term solutions, and we agreed on which route to take.
He assigned the work to his employee, and the work was completed in a couple hours. Although he was not the cheapest of those plumbers who replied, I did feel that Joel provided a reasonable price for the work, had great communication, and his employee also had all the necessary parts for the job in his van (eliminating the need to run down to Home Depot or Lowes for parts). Joel's employee was hard-working and he also provided me with before and after photos of the work completed.
I am inclined to seek him out again for future home improvement projects (bathroom remodel, roofing).