On the main Forums page (which you can get to if you click the Pixies Place Forums link, top left corner) the top will have the information about you, last time you were on, etc. And to the right is the link to LOG OFF. I think you have to hit THAT to get out of the system entirely (including cancelling all browser cookies). Again, check with one of the Forum Goddesses first (to make sure I got it right!).