What's already been said to answer this question is exactly right (thanks everybody!), but I'd like to emphasize that we here at FiberglassRV.com discourage people from putting their contact information in their ads.
The forums are subject to webcrawlers (which is a good thing) and you don't know how long your private information will be public.
DO CONTACT EACH OTHER via "Private Message" or e-mail. As Kootenai said: clicking on the seller's name provides options for doing this.