I have over a dozen domain that will most likely will be found out by people wanted to buy the domain by typing it on their browser to see if is available or not or is it for sale or not. The domains are based on a brand new niche only a very few people know right now, and also consist of keywords that will be searched for within weeks by millions of people, because no one has done this yet...until now! However, I already have few domain that is related to this niche that I will be only using to update content and write about the new niche. Therefore, will not need the other domain names for live updated content. Therefore, for an audience like this that are only coming to my website via interest of purchasing the domain name or wanted to find out if it is on sale, what should I do with them? Just park it or sell domain-related software/ebook that will be interested to those audience that make $ via buying and selling of domain names?