First, I'll admit that I used one of these sites for our upcoming trip b/c it was booked last minute and I've also used it to help friends book last minute ADRs ... I won't name the site I used but it was the one that just sends notifications and it was up to me to quickly log on and try to book it myself.
But in response to people wondering if it will have an affect, last Tuesday evening, I started getting constant notifications that ADRs from 8-10pm at Ohana had opened up ... I got about 20 notifications between Tuesday and Wednesday, so I'm wondering if that was ADRs that were released by the companies having to C&D? I just thought it was unusual that so many popped up and these were prime time ADRs b/c its during Wishes