Why do you want an IP of a person? To DDoS? Just Social Engineer them to opening a file. Or, host some website and get them to go on. Then in some admin panel you will see their IP.
Make a website using some free sites. FREE WEBSITES - Free Hosting with Unlimited Webspace and FTP! Yola - Make a free website with our free website builder *Had to remove a website because was censored* Tell them to Sign Up. And viola you got their IP. Tips: Be creative.You know if they are boys tell them there are porn and you can't be caught if you watch it. @Ghost
