This has been a learning experience.
I first built StopBuyGo.com and realized that an online convenience store was probably not a great idea so never did anything with it beyond making a theme for it.
Then I did a snorkeling blog which turned out to be a decent idea although it never made any money.
Doing just a snorkeling blog was too limiting and people around me kept on telling me to also do a kayaking blog.
So now I've setup a blog where I can easily add category sections that each has its own theme and imported incorporated snorkeling blog into it.
Trying to find sponsors is a real challenge. For now I've got a bunch of Amazon stuff in there but it's more of a place holder than anything. I've looked through Atrinsica and Commission Junction but I'm not seeing sponsors with the kind of things that I think might sell.
Hoping after it's up for a few months and I've got more link trades going I can sell some ad spots.