Blogs are good for creating a simple website that will get decent PR in a hurry, and has a unique IP to boot. I have one blog that is more or less junk content, bonus promotions and the such, but is over 50 pages with most of them being PR4. Have another blog that is unrelated to gambling, but is specific to a topic I am passionate about. That one gets decent readership and has become a part of the community it is involved in. For business purposes, there are many positives to blogs, some on the SEO boards suggest creating many blogs that link back to your sites.