Which as discovered by clicking “go back to previous page” as well as context on the page was that it was a redirect from all of the links on this page: http://pages.swcp.com/~mccurley/danger/danger.html that were things like “click here to (do x bad thing) to your machine”
Got an interesting page on the security of the world wide web.
The link I got was http://pages.swcp.com/~mccurley/danger/mailbomb.html
Which as discovered by clicking “go back to previous page” as well as context on the page was that it was a redirect from all of the links on this page: http://pages.swcp.com/~mccurley/danger/danger.html that were things like “click here to (do x bad thing) to your machine”