The Huffington Post, or Huff Po, ranks #1 in several polls due its high traffic and influence (According to Google Analytics, The Huffington Post has 22 million unique users each month.)  

It is a liberal American news website and blog founded by Arianna Huffington, Kenneth Lerer and Jonah Peretti that features various news sources and columnists.  The blog covers everything from politics to business to entertainment.  Launched in May of 2005 as a liberal commentary blog, it has greatly expanded, but has also retained, and is known for, its liberal and sometimes controversial edge.

For the "The most powerful blog in the world," (The Observer), you'd think they'd use spell check!

Here are two of a possible 4523 errors:

Miniscule  Suggestions: minuscule, minuscules, minuscule's  (appears 2 times)

Requriment  Suggestions: Requirement, Regiment, Recurrent, Rudiment, Recumbent 
 (appears 2 times)