You have a pretty successful personal blog, and now you have this amazing business idea. Do you combine them, or create a separate web presence for your business?
If you blog about pencils and your business is making pencils, it’s a marriage made in heaven. But if the connection between your blog and your business is not obvious, the decision to add your business idea to your blog is not so cut and dried.
There should be a connection between the two, however thin; even if you blog about IT consultation and want to start selling lingerie, there is always a way to bridge the gap if you are creative enough (think humor, and the world is your oyster!).