Fast, safe and customizable. It's absolutely the best of the Web browsers.
It's not paypal.com. It redirects to an ad webpage.
It's a website of a company that made Windows, Microsoft Office, and Internet Explorer. It's definitely safe.
You can control which scripts do you want to run on the site. It makes your browsing safer and it blocks annoying scripts.
Some antiviruses detect them as trojans, but they are not harmful, they're just jokes.