It brings back a bit of the serendipity that we've lost on the web due to the quality of a certain search company's algorithms.

See also: Random Shopper — http://randomshopper.tumblr.com — and the Random Amazon Product Generator — http://thanland.com/projects/random-amazon/ (disclosure: my site)

Also, this comic explains - if it was really totally random - why it might not be the best idea ;)