I find myself reading blog posts and wondering why so many authors try so hard to get me to leave. They load up their posts with links — usually on obscure anchor text — in a vain attempt to show me how well-read or popular they are. (too harsh?) Imagine if footnotes had to be published in-line in research papers. You would never get to the end.
Then again, footnotes serve a real and valuable purpose. With all of the unsubstantiated propaganda on the web, a well-placed link can add credibility and contribute to the web that is the world wide web.
I would link to some examples, but that would be distracting.