Imagine, if you will, a search form...
poster: [TB ]
search terms: [iraq,defeatist,liberal]
<I'm feeling luck> [x] random
You'd get the wisdom of the ages! Constant and unvarying, from 2001 to the present.
Or, imagine a "mashup" feature, that performs a similar search, and mixes-and-matches randomly-chosen sentences from a whole bunch of posts?
There's yer VirtualTom, Google style.