Yes, it depends on what you are looking for. House sitters are that: house sitters: you don't charge them (normally), and they will take care of pets, plants, bills, cleaning etc.The benefits of TrustedHouseSitters etc is that people have references (and often their own place that gets 'sat').
AirBnB is a whole different thing: you charge for usage, should have nothing of personal value in the apartment and you need a local caretaker who does or controls the cleaning etc. It is quite a lot of work but can create a nice income, we have used it now for several years in Patagonia.