It's different just like it's different from finding someone to drive you across town on craigslist (or perhaps hiring a random person on the street with a sign) is different from Uber/Hailo/Lyft. On craigslist, I don't know the person who is renting these tools out, what their reputation for renting things in good condition is, if they're still available, if I can pay with a credit card, and how quickly I can get it and many more questions (Do I have to drive to them? Will they deliver? Do I have to wait until after 6 when they get off work?).