The show is you. You must sell you on the Internet. You must be attractive enough to attract audiences. There is no point for you to advertise when there is nobody to see it. Think about what you know, what you like, what you dont like, and then write about them. Regardless of where your blog is, unless you update them often, you will not attract anyone.
Some of the topics people may choose to write are
(1) What you eat
(3) Where you go
(4) Whom you met
(5) Business Failure
(6) Business Success
(7) Advise you received (Good or Bad, Worse)
(8) Health and Diet
(9) Economy and Politics
(10) Current News
Again, you need to update your blog as often as possible. Also, pictures will make your blog more attractive.