It depends on how you advertise the names. Most don't allow this. TrafficZ does allow you to do some things and you can even optimize the landing pages the way you want to.
The best thing for parking services is to tell them exactly what you are thinking about doing first and make sure it is ok. I have signed up with a couple of services and then never used them because they didn't like what I wanted to do. It saves us both time and bad feelings.
All I do is add links to blog posts or other places. I just put up some links and if people click that's great and if not that's ok. That way they only click if they are interested and if they are everyone is happy. :-)
