There are similar sites for home loans, all kinds of loans in fact, for people with less than stellar credit situations. You provide them the info and then they farm it out a hundred ways to Sunday. What it usually does is lower your credit score from all the hits.
In real estate we've had people who were qualified to start for a good loan find out they qualified for nothing after using one of the popular loan search providers. Of course I won't mention it by name but you get the point.