Alex is right.

It creates link on other sites (usually Web 2.0 sites, articles sites etc) that point back to your website.

Its a great tool and works very well, though has a little bit of a learning curve.

Plus its a lot more stable than some of the other "over promoted" link building tools out there..

Hope this helps

Bruce

Huge learning curve over here!!! I think I got it, will give it a shot in the morning{headache}