One of the tasks that our company does systematically is the review of multiple real statre articles and we try to give our customers a summary of the most important issues we find in our blog.
Blogging is a useful thing in SEO, but most users fail for the most elemental of reasons: Most people fall back into a pattern where they start failing to keep it posted frequently, which actually gets the user penalized by the search engines, because the content is not kept fresh. If you want a blog and you are not willing to invest the time required for this task, there is a company named Real Estate Blog Sites. They will run it for you and keep it current for under $100 a month.
Reference
What Every Agent Needs to Know about Blogging, Social Networking, RSS Feeds and SEO
by Michael Parker Broker Agent News Feb 23 2008

Thanks Gabriel--I have only been blogging for a few months and have already seen the rewards--you're right, you MUST invest the time!
I am seeing more and more companies like this pop up. In the long run it is much cheaper and more effecive than Google ad words.
Thanks for the post
Tony