I have a business blog called Virtual Insights (
www.mycreativeassistant.com/blog - it's on my site Tess!

).
I have a multi-VA team and we try to blog twice per week on topics that often surround the types of services we offer our clients. (Now that I say that, I notice that we haven't blogged in a couple of weeks!

.) Some examples include what happens at the back end of a teleseminar (what needs to be set up and done), how to use articles to increase lead generation, using autoresponders to keep in touch with your list, an explanation of the opt-in box, how to market a teleclass, etc.
The blog hasn't been monitized yet but it's on my list of to-do's. We'll be adding banners for our affiliate programs with vendors such as 1ShoppingCart, Aweber and VAClassroom.com as they are items of interest to our readers.