• you post the wrong article on the wrong blog
  
• your family prefers to interact with you through your blogs
  
• you met your girlfriend/boyfriend through a blog
  
• your “blog community” is much, much larger than the number of people you know in real life
  
• you consider yourself an “alternative journalist”
  
• you start your day by checking your blog stats
  
• a day without blogging seems like a month without food
  
• your feedreader is open all day
  
• you get more “approve this comment” email messages than spam
  
• you know what RSS stands for and you know how weak the medium is
  
• people worry about you when you do not post anything for a day
  
• work is the little time you spend in between writing on your blog and IRC
  
• my pagerank is bigger than yours!
  
• invalid XHTML is a bad word to you
  
• you check your blogshares weekly, more than you check your savings account
  
• you’ve gotten your parents to blog
  
• your dog has her own page on Dogster and it gets updated!
  
• Kubrick is no longer just the legendary filmmaker
  
• you have to switch hosts to keep up with your bandwidth needs
  
• you make more money from blogging than you do at your day job.
  

Taken from: http://weblogtoolscollection.com/archives/2004/08/11/you-know-you-blog-wayyyy-too-much-when/