thanks cbp

but i am not talking about a tool to add links
in the purposes of manipulating the rankings and not linking for the benefit of your user.
i was talking about a tool that loads links to your site and give the option for visitors to ad their links. you can screen what links are good
if you wish.
so i have to disagree

As i see it a tool is just a tool. what you do with it and for what you use it is another story