If you know how to work it it does, it is a search engine cloaker what that means is the SE will see your specialist SEO pages and the visitor will be redirected to a landing page of your choice.

The thing is that you need to create good content and therefor you need the template ad-one without that SEC is completely useless and the SE will ban your domains in a heartbeat, i have SEC (witch i bought) on some domains for months now and they are still in the SE, but it all comes down to the content and the template.