Same. I rarely give out my email address for a waitlist, but the "Prefer More" screenshot showing that you can influence the rank of individual sites is a feature I've wanted in search for ages. There are so many sites I'd like to delete from the internet when I search with Google / Bing.

Same here in Europe. That's probably a good thing for them as it looks very US focused for now (as many products are), so providing a lesser service to users outside their currently active markets prevents bad user experience & bad reviews. I won't hold my breath waiting for it to hit Scandinavia.