We don't send them any survey ourselves at the moment. We include that text - "we MAY send you a survey" - because a lot of owners like to send a review request (from FlipKey, HomeAway, etc) to the guest after the fact. We like to alert the guest that it might be coming so when they get the review request email, they understand why they're getting it.
Here's a forum post about it last year:
https://www.ownerrez.com/forums/general-help/security-deposit-release-email
In addition, we are designing our own review system that will ask the guest to fill out a survey. Our goal is to ask the guest directly for the review, since they're used to seeing our emails, and then be able to update all the listing sites so the review is everywhere.
-Michelle
