I recently had a conversation with someone about why I tend to favor working on WordPress plugins over working with themes, and the short answer is that I enjoy working more on application-type functionality rather than working on a design layer, and, as such, I believe plugins are applications for WordPress.
I’ve talked a little bit about this in previous articles:
In short, I tend to strictly view themes as the presentation of data whereas I see plugins as something that should transcend themes and offer functionality to WordPress regardless of what the current blog looks like. This isn’t a revolutionary Idea. Most experienced WordPress developers and designers feel this way, but I figured I’d offer my two cents on the subject.
In a way, plugins are like apps for WordPress.