Why do people use accounts that aren't theirs?

[KuJi]

Originally Posted by Chris

No clue why they do this. I do know it happens daily and some players are smart enough to get their hands on dozens on stolen accounts and use them as currency. Luckily they aren't smart enough to hide their IPs or computer IDs.

Uhm, I always hide my ip.. there wasn't computer id's back then but my friend found out that any of the below will make your pc id change
Installing over Windows
Installing Fresh Windows
Different Operating Systems
Windows Updating

Couple more I don't know, but I can easily just switch to linux, and use a virtual DVD distro and get a new id daily.

As for ips.. proxies.