Looking forward to a nice paying part-time job? Then it’s high time to become a usability tester. You can make extra online income by critique a website from the perspective of a consumer or visitor of the site. We all think or rather can say ‘believe’ that a website developer is the man behind a successful running of a website and so all credit goes to him. But usability tester or website tester also plays an important role in the development of a more appealing and easy-to-navigate website.