User testing services e.g. WhatUsersDo - this platform allows you to test your website remotely with users in their own homes. Users record their screen and audio, so you can see the full experience. You give them tasks to focus the user test. You can then use their tagging tool to collect insights from the video outputs. It's fast, focused research that provides insights to help improve your website
Traffic exchange users are comparatively low quality, but they’re still real humans. You’re getting real people to view your site, you’re just not bringing them in organically the way Google intends. You can make money from these users, but your conversion rate will be typically lower than what you might see from organic traffic. Of course, it’s also much cheaper and faster to find this traffic than it is to invest in SEO and content marketing.