Have you ever had to deal with spam accounts on your website? If you allow just about anyone to register, then you have dealt with this issue. You could always keep an eye on your website and delete bogus accounts. The better way would be to use a plugin such as Ban Hammer to keep spammers from compromising your website.
Ban Hammer prevents unwanted users from registering for your site. It saves you a lot of effort in the process. Ban Hammer uses your list of blacklisted emails to keep spammers from opening up an account. Users have the option to personalize their error messages and enter new emails to be blacklisted easily. This may not stop every spammer but can reduce your workload.
Ban Hammer is a time-saving tool that helps you keep spammers away from your website. Useful for sites that allow open registrations.