Quarterly Mr Google updates every sites page rank and that includes BLOGS. In the past it greatly concerns me if my page rank (PR) drops down. It is always a sad thing for me. I have been blogging for three years now and i think i have learned my lesson well. Is this a sign that i am maturing? :)
I have learned that, I shouldn't be affected by PR. The truth is Google's PR come and go just like a merry go round. You never know for next months you will have 0, the next few months 2 and then back to 0 again. That's the way it goes!