While you're waiting for my next blog entry, try to solve one of the most popular (and difficult) riddles on the Web, called Notpron. There are 138 levels, and less than one out of every 100 000 visitors have completed it, and only after working on it for several months or years.

You are free to search the web for clues (but finding spoilers will ruin the fun, so add -notpron to all of your Google searches.) You do need to know some basic things, like knowing where the URL shows up on your browser, and viewing the page source, but nothing else that's too technical.

I've been working on this for over an hour now, and have only gotten to level six.