Are bloggers like worms?

Here is an analogy that my namesake would have been proud of. Darwin spent an inordinate amount of time studying worms and the accumulation of their waste. He showed that the remains of ancient civilzations didn't sink into the earth, rather the worm "castings," which they produced as they burrowed through the earth, actually raised the soil level and drowned the ancient buildings. I've been thinking about worms as I plan an RSS aggregator for a Ruby tutorial I want to write. What RSS based websites really resemble are worms burrowing through a rich substrate of feeds, excreting modified versions of their input as RSS feeds in turn. The functional analogy to worms is clear, the metaphorical warning for society is open for discussion.