I don't want to downplay their contribution. It's awesome, period. If you squint your eyes though, it looks like a growth hack, similar to their original Craigs

I don't want to downplay their contribution. It's awesome, period. If you squint your eyes though, it looks like a growth hack, similar to their original Craigslist indexing hack. Getting people who offer their homes in cases of emergencies to sign up might lead to them renting out their homes later on. Plus there's the free publicity. It's a win-win for everybody involved.