Can someone give me some suggestion about my site: http://www.power-battery.com.au yesterday i found my website's PR update from ZERO TO 3. but the pages reduced from 2000 to 900 in google index! Punished by GOOGLE?
Your indexed pages may have just been pushed down to the supplemental index. This is not a big concern. Just work at getting more links and adding more content. I doubt you are being punished.