The boffins at Information Architects have come up with this jolly clever tool, which throws the top 200 websites ("ordered by category, proximity, success, popularity and perspective") together and makes a map out of them.
Worth a look on a dull Sunday afternoon, what.
"I would also like to take this opportunity to squash the persistent rumours about mysterious 'disappearances' and emphasize that rural and urban areas are now enjoying a life of harmony and peace. I'm sure you're glad to hear this. And I'm happy you're glad."