Anybody have any experience with autoslash.com ?

I have read a number of good reviews on the website in the last 6 months or so, but have not used it. I can't seem to figure out how they make their money and simply don't understand what consideration I am giving up in return for the benefits gained by using the website.

If you have any experience on how exactly it works and how you take advantage of a lower quoted rate once that is determined, I would be grateful for some detail.

Tired of repeatedly searching for the best rates.

Thanks
hytail