It is 100% free to use and 100% low quality in my view.
If you are in the United States (or even Canada), eharmony is the first site I would sign up for.
is a good site, but with eharmony, because of the exhaustive questionnaire you have to fill out when you sign up, you will spend less time weeding through low quality profiles.
I found love on a Cupid Media site (Brazil Cupid.com).
With that said, I would use this site as a third option if your two options above don’t give you the results you were looking for.