I login to different accounts using different browsers, but I normally don't bother logging out whenever I go to other sites/other browsers (I think most people don't lol). Recently I'm getting into proxies, but was wondering whether there is any risk in this habit of staying logged in, other than the obvious one of going onto Neopets/one account with the wrong IP? For example, is there some way for TNT to see your IP change even if you aren't online at that moment, but are logged in nonetheless?

I'm sorry if this is a terribly noob question