Most likely when you’re building a site in WordPress there will be times when you want to only include certain CSS or Javascript files on certain pages of the site. An easy way to do this is to use different template files for the different pages of the site. Then load certain CSS or Javascript files on these pages only if they use a certain template.
One thing that’s good practice to do on a blog is to somehow highlight the authors comments so they stand out from the other comments. This makes it a lot easier for the user of the website to visually pick out which comments are from the author of the blog entry.