Someone who needs a place to live in and doesn’t have the money or doesn’t want to buy their own place. IMO, it is a fair trade as long as the landlord isn’t a cunt. The reasons to why they don’t have enough to buy their own place have nothing to do with a single landlord, some people don’t want to take roots in a single place. If you wanna go to war with someone, go to war with companies, ban companies on owning and renting places, not people.
By that thought everyone should be doing everything for free.