I tried some of the methods which was revealed in BHW couple of days ago. I didnt even created my site,I installed a wordpress blog,changed the theme. Now after few days my site is having PR7.I couldnt believe it,my site is not ranking for a keyword,but its page rank is 7.I tried identi method. I simply dont understand how this happened. Is this some kind of an error from googles part?Do page rank jump here and there or not? Now what do I need to do to not let my page rank fall down if its an error from google.