What are cons and pros of the following:asking to repeat passwordasking to have a certain length-passwordasking to repeat e-mail addressusing captchasending confirmation e-mailwhat do you think is the best way - to have those above or not? I'm especially interested in the last one.Take into account that it is necessary for the web-site to have user's real e-mail address.
User registration usability vs security
security;usability;registration