Login process should be extremely easy as this is they way users will get into the personalized content of your website. Many users get tired and leave if they try to login a few times and they can not get into the website. Specially new users leave and don’t come back.

Avoid unnecessary information or distractions. 9rules, the social content network, tells users that the password will be emailed when the are at the login page. This is confusing as usually sites don’t send emails during the login process.

Making a mistake introducing the username or password takes users to the signup page. In this particular case, this is really bad as no error message or password recovery link are displayed. If you want to improve usability and your general web design, I would recommend, first to nicely tell the user that there was a mistake, and after that give an easy way to solve the problem (in this example would be a “try again” or “recover login info”)