This question applies to other websites. Not just GAG.
Personally, I always delete an account if I dont want to use it or I'm too addicted to the website as it is very tempting to log in again even if I really dont want to.
But if it's for websites where you can't delete it. I would change my email to my junk email (the email where I use it to transfer useless accounts that I would never use) then make it very easy to forget by putting random words and numbers.
- Delete itVote A
- Leave itVote B