A blog is essential for a thriving website. It allows your audience to interact with you on a more personal level as you share your thoughts and views.
Don't write just about business issues ... share something of yourself in there.
I recommend Blogger. It's run by Google, who also happen to be the most popular search engine on the globe at the moment.
You can customise the blog and add various widgets to spruce up the page.
Check out http://wolfphotograpy.blogspot.co.uk/ for an idea.
Try to write an article once a week to keep people and Google's spiders interested.