The skin jumps opposite the impersonal convenience.
WordPress Plugins come in two styles: drop-in and mess with. Those are my terms, not the official ones.
Drop in WordPress Plugins are Plugins you upload, activate, and then interact with only through the WordPress Administration Panels.
Mess With WordPress Plugins are the ones you install and interact with through the Administration Panels, but they also involve editing your WordPress Theme template files, which means you are messing around with your WordPress blog.
