Feedburner crunches their data and the news is:

• Bloglines 31.2%
  
• Feed demon 20%
  
• Newsgator 8.2%
  
• Newsgator Online 7.1%
• NetNewsWire 5.3%
  
• Sharp Newsreader 2.9%
• The others 25.3%

What's your favorite newsreader?
Note: If you're not using a newsreader, check out Bloglines, or email me for a rojo invite.

Update: Turns out this chart is not definitive, just an example of the kind of interface coming for Feedburner users. Oh, well.