@Natasha36, we haven't noticed a drop-off in bookings since we started including the security deposit. But in our listing, we explain what that deposit is and what it isn't. Despite what the term "security deposit" suggests, guests are not charged anything up front; the deposit figure is merely an agreed-upon maximum amount that guests MAY be charged afterward if something unexpected happens during their stay and the property is damaged. We also explain that it's Airbnb's call as to whether the guest is charged for damaging something. We keep the language friendly and conclude with, "Hey, better safe than sorry, right?"
Honestly, Airbnb shouldn't call it a deposit because it's really not. It's really a damage policy.