Anonymous FTP allows visitors to FTP into your account and download files with a common login (anonymous or ftp) and any password. This can be useful for distributing large files via FTP to visitors to your website without granting them access to your account.
Anonymous FTP automatically restricts anonymous users to an area of your account where they can only download and cannot upload or modify any of your files. You can create a welcome message that will be displayed when someone logs into your account via Anonymous FTP.