Here is what a test includes --
To record your voice and website, testers go to a web page containing a Java Applet that allows you to start and stop recording your voice and screen.
Each test takes about 15-20 minutes to complete, and payment is made via papal. There are no limits to how many tests you can complete each week, but the website does say that most testers will average 1-2 tests per week. So not a great source of income, but can still be a fun easy way to make a few extra bucks at any rate.
To learn more, visit the Try My UI website.
Good Luck!