I logged in once and now I can't get in again. Why??

If you are certain you are using the correct password, this could mean that your browser "remembered" all those extra characters that appeared when you logged in. NEVER say "remember password" for this site. You need to go into your browser preferences and clear your private data. In Firefox, start with the Firefox menu:

Firefox > Preferences > Privacy



You might want to also click on the Security tab and uncheck the remember passwords boxes.