Tor and IP Address - Quick Question

[idontknowtech]

While using Tor, how often does your IP address change? The reason I ask is because I want to join a paid membership site but their members' area kicks you out if you log on from 10 different IPs in one day.

[SafetyFirst]

I have a question about IP too. When using Tor, whose IP is displayed? Exit node's? I have ShowMyIP Firefox add-on and every time I use Tor I check my IP at
http://ip-address.domaintools.com/
http://www.leader.ru/secure/who.html
http://www.dnsstuff.com/tools/aboutyou.ch
This is always same like what ShowMyIP displays, so I guess everything works fine, but it somehow mismatches what I see in Vidalia's Network Map.
There I can see nodes' IPs but none of them is the one that is shown in ShowMyIP or above mentioned sites. Can anyone explain, please?

[itsmej]

While using Tor, how often does your IP address change? short anser depending on how may ips are there you are bouncing of ,can be any where from 2 to 222 as it relays you to many IPS .thats there idea of hiding you .