This page generates a bunch of bogus email addresses, and links back to itself. The theory is that these scanners will get caught in a loop. There is a tag in the header (and in my robots.txt) that tells Google to not follow these dummy links.
Here's the bogus email addresses (the first one is real for testing the success of this page from time to time):
And here's the links back to this page:
Written by Andrew Chapman - April 2003
Here's a link to the PHP source for this page: blk_hle.src.