Every morning, i will check the Alexa rank, Google page rank, and the sougou page rank.Google page rank is 4, very normal, however, sougou page rank was 1 yesterday becomes 4 this morning. What's wrong, i just can't get it. It is a good thing to have your PR increased, but so abruptly and abnormal. I am a little worried.
This thing is said to as a Google dancing suddenly it show high of low.So do not worry about this. Your site sites in Google rules know so its fine.
Dancing doesn't only occur when new links are pointed to your site. It also happens simply when you add more content. Nothing makes complete sense with Google, that's why they have the upperhand.