i was just thinking... awhile back i made 3 accounts at about the same time, but i didn't use a proxy or anything and i havent logged onto one of them for like 4 months and i wanna start using it to AB with a proxy, but i'm not sure if an account can get unattatched from you're IP by just sitting idle for a couple months...
I wouldn't think so. It's not costly for neopets to store a static number like that in it's database.
I'm pretty sure tnt logs your IP when you an account. But I wouldn't be too scared of icing if you're using a new IP on one of them to ab..
probably still noticeable, but I doubt they would be concerned, for people move all the time. Whether your sister made it and then went back to college, or a friend created an account at your house and now plays at his... there are plenty of logical reasons for legit account to not operate on the same IP