I found this URL from an advertisement. I clicked, and started to look at the page... Then the signup form appeared and I couldn't browse any more. Of course

I found this URL from an advertisement. I clicked, and started to look at the page... Then the signup form appeared and I couldn't browse any more. Of course, I immediately closed the page, because I won't sign up for something I haven't looked at yet. Absolutely the wrong way to do this.