Actually you can take a lesson from Google, and every once in a while prefix all links e.g., "http://en.wikipedia.org/url?http://en.wikipedia.org/wiki/Norflblarg". (some kind of recording redirector). How do I know Google does this every so often in their search results pages? I use DontGet{:*://*.google.*/url?*} in my wwwoffle.conf file, so the alarm bells ring, whereas the average user would never notice the difference.