Tell me if this idea has been done or why it wouldn't work? Build a forum or classified site with a branded.com or .net name and allow anyone to advertise for free. Let people spam the heck out of the forum. You would have alot of traffic and and alot of people signing up to advertise for free. Write about 3 articles about the site and your plans for it or why your different than other sites. The forum could be niche specific to get targeted traffic or make it a broad topic say"making money online" The owner could have this linked to other sites he owns and gain pr ranking. You could allow every type of advertising imaginable from adult to products. Then sell advertising space at the top of the page where the most traffic on the forum exist. Once the site is ranked and running consistently sell the site on sedo. The deal with the new owner would be back-links to all your sites. You could even CS the site before you sell it. Rinse and repeat.