Yes, I was wondering something similar. I switched to just using the code in the post, b/c using the widget (in the body or sidebar) only gives a truncated testimonial...after about 2 1/2 lines of text. It looks great, b/c you wouldn't want the FULL long testimonial every time. UNFORTUNATELY, after the reader becomes interested, that switches to frustration when they cannot finish the story...at least not without looking through all the testimonials to find the one they were reading.
I too think I must be missing something.
Perhaps we could add a link, after a determined number of words in a testimonial, that took them to a page that was set to display ONLY that testimonial. But then, there would always be that link within the full story...and that wouldn't look good.