Craigslist's one goal in the world is to make a profit. That's it. Everything else comes secondary. If they decide that providing users a service will help them accomplish this, then have them provide a good service (which they do). However, they don't owe anything to any businesses or even any users. If users don't like this, let them go to an alternative. Welcome to capitalism, where the users decide what product they want. (Now if you don't like what the majority of users are deciding, then that's another issue altogether.)