I've had a Vimeo Pro account for a few years, and have been really happy with them. I recently completed a survey for them. This was the last page.
I found this screen quite problematic for a few reasons:
 They didn't tell the truth about their intentions up front. The purpose of the survey was stated as (broadly) understanding our experience and improving the service.
 They want to impose a pretty high standard on the individual offering the testimonial. Contacting them if your opinion changes, for example. Can you imagine actually trying to do that, and how much aggravation you would encounter?
 Completely one sided. They get to choose what my testimonial is and how to use it, including my avatar, and I get ... umm, well, nothing.
Seeing this actually changed my impressions of the company. I found them to be less trustworthy than I had thought. They came across as grasping and unpleasant. Involvement in research generally leads people to form a better opinion of an organization. In this case, the reverse is true.
My final issue is this language: "Your testimonial is truthful..." I am seeing this start to appear in other research documents, at the request of clients. I'm not sure how the lawyers got involved in research, but this feels like a really hideous trend, and one we should all endeavor to stop in its tracks.