I have been blogging for 3 years already and it was only this year that my my page rank was downed from three to one. There are various of factors to the decreased of my page rank, I guess one of this is the number of posts I gathered each month. When I was just starting blogging, my average post would be 60 per month but now I can barely reach 30. But of course, I only have 3 blogs 2 years ago. So posting 2 3 articles would never be a problem. Now I have 12 blogs , maintaining them all is a great challenge.