I help manage a site for a web hosting company that also does domain registration. They have sold several thousand domains, but the customer has not set up a website for it or pointed the DNS someplace else. So the domain brings up the web hosting company's Parked Page. It simply says "Parked at (Company Name)"; has a few lines advertising their web hosting service, and a link back to the homepage.
The web hosting company is wondering if having the link on a parked page, which is also hosted on their own server, is bad for SEO, or maybe seen as spammy? We are certain that it is not passing any beneficial link juice to their site since Google doesn't give any to Parked Pages, but can this be hurting them? They would like to keep the link on the Parked Page for practical reasons of making it easy for anyone who lands on it to go to their website. I have read about Google penalizing Parked Pages that are filled with ads and links, but this is just one link on their own Parked Page. Any thoughts?