My first Facebook Pages was actually created by accident. It ended up pretty good as a method to do Marketing via Facebook. The main reason is that you could collect fans and admin them over at the page. Rather than creating a whole new facebook profile, whereby you will need to have a saperate login.
With pages, your feeds are published at the page where user login. This is also the page where everyone tries to keep up with their friends status update. As you can see from the screenshot below.
Message to all fan with just one click
Compare to having another profile, you will need to type the username one by one. What if you have more than 100 friends, or if you have 1000 friends. Are you going to send one by one? With pages, you can just send message to all fan.
Search Engine Optimization (SEO)
On top of all that, your page is indexed by Google. Search for Malaysia Classifieds Listing, you will see my page third on Google. And it actually have a PageRank with it too (although mine is not high).
I believe the three reason on top is more than enough to have you creating your very first Facebook Page and to market your website right after this.