A lot of people focus on the plugins that your users can see, but what about the ones that they don’t see? There are a wealth of them out there that will help you run your site more efficiently, and won’t do one thing to change the physical appearance of your blog.
One that you should certainly look into is a cache plugin. This will allow the site to pre-load certain items so that when the visitor comes to your site, it will load the most recent save of a section of your site, allowing for a faster load for the visitor, and less strain on your server. While the server part may not sound important, it is. If your blog becomes popular, and starts causing too much strain on the server, it is possible your webhost may fine you depending on your contract, or go as far as to close you down.
If you are using WordPress, I would highly recommend you download WP-Cache and get it installed as soon as possible. It’s easy to load and set up, and shouldn’t take you more than a couple of minutes.
Get on it, and start relieving some of that stress on your poor server!
