I am a fan of going to http://www.thehungersite.com where you can click on links which take you to a non-pop-up page of ads that pay money in turn donated to charities iworking towards various causes. Now, the site I believe advertises that you can click on it once a day, as in clicking a second time for the same cause on the same page won't do anything. I'm wonderigg though, what do they use to trck this, cookies or ip (simply by guessing in terms of what's popular now, I'm not asking anyone to actually do research on this) and if ip then what changes the ip?: I go to thehungersite.com on my home comptuer and when I'm on my account at school wherin you log into your account on any of various machines. My home network has two computers, do you think doing it on both would have an affect or would they be all one ip as they go through the same modem via a router? And at school, would it be my account or the computer I'm on that determined ip (as in would logging in on a different comp work, or using a different login on the same comp) or is it all one ip anyways?