If contenet is king then these 10 Techniques for Finding Blog Readers is a great list. One of the problems that people have in starting a weblog is finding content. As a Realtor this should be easy. Set up tutorials and guides as to what the process is, how a Realtor can find people great deals. What is takes to bouy a home, tax implications of buying a home.
I know that some Realtors are concerned that a site like Zillow can be a problem as it may or may not have accurate property values for peoples homes but the price of a home is not what a Realtor offers it is all of the things above that create value in the eyes of a buyer or seller.