This reminds me of a business that was very successful for one of my brother's in-laws.<p>It was a site where you could post free press releases. If you liked, you could buy one or more stars for your press release, and the more stars, the closer to the top it sorted.<p>He bootstrapped in the late 90's without investors, his only co-founder was his wife, he grew it organically and got very profitable, ended up hiring a couple dozen people, and ultimately had a very nice exit.