Spamming Search Engines

We have run into some new type of search engine spam and have notified 4 major search engines of our findings.
I don't want to go into details at this point but as we are looking to find the source of it.

If you think spamming search engines will help your ranking you are mistaken. Search engine spam hurts search engines as it uses up resources and the majors don't look at this kindly.

Don't fall for the Ads that promise you thousands of visitors if you use their service or install their script.
In most cases these services will only send you garbage traffic or worse get you black listed in a Major Search Engine.

If you have had any bad experiences with such services let us know.
The one I am looking for seems to be an underground service which uses the worst possible methods.
They don't seem to care the type of sites they are spamming as even sites that are doing things totally illegal on their list of sites

Building a good reputation takes time and services such as these can destroy a reputation over night..