This is building markets and promoting the free flow of money and services.
It’s a job service. You post a job, like “Bring popcicles and medicine to my sick friend” and a price you are willing to pay. Then someone (who has had a background check) does the job. It’s brilliant for both sides. You can make money being a “runner”. You can pay someone else to do something while you do something else. Anything that promotes the free flow of money between the ambitious and hardworking is a good thing in my book.