Ways to find other's IP address!

Is there a way to find out what other accounts a person has by using an ip address?

Using Freewebs to set up a free site

You'd have to have them go to a website of yours which would log their ip. You could use Freewebs to set up a free site, but then you'd need to convince them to go to the site, and you'd need to write a script that would log their ip.

Easiest way to Find

Go to this page http://www.s33.net/rec/create.
Choose a redirect URL and a password and the script will create you a link.
Send this link to anyone you know (online) and the script will record their I.P.
Now Click Login at the bottom of that page to login and view the IP addresses of those who have visited your link.
Login page requires you to enter the link ID and Password.

via webtrickz

pic via videojug

Tricky Way To Get A Persons IP Address

Uh ya I was on Google looking up some information for AIM and some cool buddy icons and I ran across this funny little thing you might want to see. It is a website that gets peoples IP address. You just plug in your email address and copy the link, then send it to some one. via defcon

find out a person's IP address from a Yahoo message

Open Yahoo mail ►, and open a message in question.
Scroll all the way down the screen until you see "Full Headers" button and click on this button.
Find the string that starts from "Received from" (see example attached) and copy IP address.

full steps via ehow