Top 20 web sites by time spent there

Early this morning, I battled through the London snow to go into the city centre for a seminar at the international law firm Denton Wilde Sapte. The speaker was Professor Paul Maharg of the Glasgow Graduate School of Law. The title of his presentation was “Blogging, podcasting and beyond: from real life to second life”.
There was a lot of good stuff here in an excellent talk and one of the many things I learned was the top 20 web sites on which Americans spend their time.
The full presentation can be accessed here, but be aware that it’s 12MB.