Page Rank Drop. Need Help...!!

Bloggers, I was shocked this day finding the fact that my Blog's Google Page Rank was dropped slightly from two to zero. This Page Rank dropped in just a week. My Blog on the downgrade is “The Ambarawa Railway Museum”. I’m afraid this bad performance will influence my revenue from Paid Review, as this Blog frequently bring about orders from advertisers. As we all know, one thing influencing advertiser decision to make order is Google Page Rank. The higher Page Rank the higher the opportunity, as well as its value.

The Ambarawa Railway Museum is my Blog focuses on spreading information around the museum. This railway museum is located at Ambarawa, a small town in Central Java, Indonesia. Dozens of old trains made in Holland, Germany, as well as England are available here. Thousands of foreign tourist from USA, Europe, especially Italy, Holland, France, Germany, and Australia, as well as Japan visit this heritage.

Dear Bloggers, or whoever you are, I’ll be very appreciate if you would like helping me to solve this problem. Please, let me know why, and what I have to do then? I’ll be waiting for your suggestions.

Regards,

Stanley Sutrisno

PS:
Below is the link to my downgrade blog:
http://ambarawarailwaymuseum.blogspot.com