|| I don't want to make use of the modification feature where users are able to modify their submitted links. How do I disable it?
|| Go to the control panel >> Settings & Options >> General Configuration
Choose that 'Enable password checking in the 'add URL' form?' is set to 'No'. This will disable password checking from the 'add url' form. This is required to remove the option of users being able to add passwords to their listings from the submission form. Also remember to remove the password boxes from add_url.html
You will also need to remove the links from your templates which points to the tmodify.cgi script which enables users to modify their links.