I have a listing with Homeaway. I have emailed Homeway several times about my concerns. The only time I obtain a response is after I call them. The listings are arranged by a fee structure where the top ones are charged more. Also, when they want you to use their services Homeaway charges a fee. If the owner does not use their services they charge owners more for the annual fee. They make money either way. Homeaway seems to want to nickel and dime the owners on every little thing.
The good thing is potential renters who are willing to look through the whole list to find a quality rental. For renters, always contact the owners directly.