Abbey Klaassen’s weekly chart lists the top 10 viral videos from last week, with number of views for the week and percentage change in views for videos that stayed on the chart.  The list is compiled by Visible Measures.

There’s a forehead slapper in this week’s chart.  Klaassen points out that this week s new entry, Verizon’s Apple-jabbing There’s a Map for That ad, went viral only after someone put it out as a homemade video.  It could be Verizon underestimated the target market for iPhone-bashing, currently made up of at least 291,244 avid online video watchers.  Klaassen wonders if a user video going viral versus having an official one put out by Verizon adds authenticity.

Microsoft’s Project Natal is still hanging in there, down a couple notches to fourth place with more than 486,000 views this week.

Check out the full list and watch the videos at Ad Age {link no longer active}.