While you are on Chatroulette, Skype,MSN…
Mac: cmd+shift+4 and select the appropriate area , the file will appear on your desktop
PC: Print screen or Prntscrn and paste it into a image editor (Paint)
Linux: Prntscrn
Also, you can often find some softwares for it on the advertisement on our website 
Once you have your screenshot submit it
