A must have feature to include in next fix...
Objective:- to flight spam & resubmitting same/similar links
Solution:- add random generated code in an image which user enters every time a new link is added (this is anyway internet standard know from creating accounts to web forums etc)
This would cut down any automated scripts trying to submit junk links.

Already Done, Go to plugin download in your admin, there is a plugin for sale for $5.00 called CAPTCHA

Thanks, it would be great to include that as part of standard LinkSQL version.