Who needs a blog or a website? Only everyone who is a freelancer. And, in the entertainment industry, we are all freelancers. Jobs for life, if they ever existed, are long gone, and for most of us a gig that lasts a few years is a long one.
One of the biggest mistakes an animation student can make is not to finish their demo reel and then host it prominently at their own blog or website. Nowadays, employers won't wait for you to mail in a DVD of your work. They want to click on a single link and find out all they need to know about you.
Is your work suitable for the job they have in mind? Do you have industry experience? Is your site easy to navigate, and does it give producers the information they need quickly and efficiently? If your website doesn't deliver, jobs will go elsewhere.