[jrsmith1279]

It might be more expensive with this apples-to-apples comparison, but do you have any idea what the actual utilization of your linode server looks like? Unless that server is under heavy load most of the time, you would probably be much better off with a couple of smaller instances behind a load balancer. Add in auto-scaling to handle peak loads. This may still be more expensive, but now your website is much more reliable than running on a single server.

One other thing to consider: You can host static websites on S3.

[hsxd]

I've considered a cluster of servers before, but the server is actually under heavy load most of the time. It's running a LEMP stack and the database is fairly big.