The point is that we enjoy FF plug-ins and Emacs scripts because they allow us to customize these "featureless" products to our individual needs. Similarly, I welcome plug-ins like Linkification and Scriptmonkey because they allow me to customize websites to my individual needs.
I would be surprised if this were the only website that you would find the Linkification plug-in useful for!
I don't know if there is anything more fundamental to making the internet a "net" than the links connecting all the pages.
I like how Safari handles it. Select the text, right-click, and select "Go to Address". I believe this works on any text in any Cocoa app as well. EDIT: I now see that Safari's behavior was mentioned in another thread before I posted.