Last week, in my professional capacity, as the keeper of this web site, I came across a cool little browser extension called StumbleUpon.

After you register, you check a bunch of boxes saying that you enjoy knitting, the Mayan Civilization and Albanian cooking. Then they put a little toolbar in your browser.

Everytime you fancy a bit of a surf of the web and you have already read The Times and all your RSS feeds and don’t know where to surf next, you click the little button and takes you to something that it thinks will interest you like:

• The God FAQ
• Mr Picasso Head
• Dirty Cars
• Running the Numbers
  
• Escher in LEGO

If there’s a site you like, you can click and it’ll send you more sites like that one. If you really like it, you can send it to a friend. If you join, you can be my friend.

Sometimes they send you to videos too like:

• Sand Art

But those are only mildly excellent. Before you decide it’s just a big time waster, be sure to try one of these – but only one. Choose carefully.

• For music lovers
• For math lovers
• For art lovers

Whatever you do though, don’t click on these:

• Don’t Click this
• Don’t Click this either