Below are some photographs that somebody, possibly me, thought should be in my portfolio. Next to each one are two option buttons. One of them is labeled, "Wow! That looks like the work of a real photographer!". The other is labeled, "I wouldn't show that to anyone if I were you".
All you have to do is scroll down the page, click any buttons you agree with, and press Submit. You aren't expected to vote on every picture, and shouldn't try.