Okay well this hasn't been posted before (I believe so anyhow) but I have recently thought the idea up. As once you get a 72 hour suspension, next infraction you receive, even a simple 1 hour suspension will get account closed. You will be exploiting this rule.
1. Well I believe this is one of the easiest methods you, yourself, can do. It'll obviously be taking 3 days however it is worth it. This method is most effective if you have full information of the account for if during the 72 hour ban they change the password and or email address via Account & Billing you can change it back. I highly suggest you do this on a Wednesday, so the 72 ban rolls into Saturday, so if they change the password on Thursday or Friday early, you can change it back Friday night.
2. What you will be doing is getting the account a 72 hour suspension. This can be done numerous ways, i.e. being extremely racial in trade chat, advertising porn sites, gold sites, hacking sites, contacting a GM and being racial, contacting a GM and tell them your speed hacking, speed hacking around cities, etc.
3. Great! Now that you've done that you wait until the 72 hour suspension is up! If you changed the email on the account to yours, you should receive a message saying you got 72 hour banned, possibly a permanent account foreclosure depending on their prior warnings. This is good if it was foreclosed, if it wasn't, read on.
4. Now that the suspension is up, get on ASAP and repeat step 2! Now the account will be closed FOREVER and you will make a safe get away with whatever you did! Congratulations, they just got OWNED.
Gongrats, feedback, comments, suggestions, flame, all accepted! Have fun and good luck!