I just pulled off the last couple of domains I had with them. I liked the idea of free parking, but when I just checked my domains I noticed a banner ad and what looked like a lot of paid links and bad content on my domains.
I don't see where I have made anything despite the fact that my domains had traffic. Maybe they will change so I can try them again. Right now I am trying NameSilo.com. They are a domain registrar, but they offer free parking and the templates are not too bad with nice optimization and content options, but you can't really add pages or a lot of articles. The domain also has to be registered with them or transfered to them.