Does your TOR exit node & hence external IP change every time you start a new TOR session?

[technomonster]

I'm using TOR to sign into a website anonymously and I recently selected 'remember me' when I signed in. Next time I went back the site autofilled my username - I've allowed scripts on this website as it's tustworthy, but does this mean that it stored a cookie to remember me? Do I change exit nodes and hence IP addresses every time I start a new TOR session?

I wondered one more thing - if I'm using TOR and my IP stays the same for whole of each browsing session, and during that time I sign into both a website account that has my real IP and details, and I also sign in to a site that doesn't have my real details but it is suspected that it is mine, could someone procure a list of the all the IP's that have ever accessed both accounts, cross check them for matches and then deduce who I am by noticing that at the same time the same (TOR node) IP was signed in to both accounts?
Thanks in advance for any advice

 

[KSoD]

The remember me aspect should be browser side only. Not on the TOR side.

But your IP always stays the same. If the site deduces that you are someone they previously banned, yes there are ways to trace route the IP back to your original IP.

 

[Trotter]

The remember me aspect should be browser side only. Not on the TOR side.

But your IP always stays the same. If the site deduces that you are someone they previously banned, yes there are ways to trace route the IP back to your original IP.

Hence how Anon took down the kiddie porn ring.