When trying to find and book a dog sitter on Rover, I am frustrated by all the teens pretending to be dog experts. Beyond that, when I do make a booking request, about 1/3 of the time I get a reply that says "Sorry, I just booked another client for those dates" -- but... their calendar remains open? So it's code for "I don't wanna." Cool, but Rover should allow users to rate the flakes on their site so other users won't bother trying to contact them.