Hi, 3 months before,my blog www.onlinework4all.com page rank was 1 so I started giving weight to page rank . I started using bookmarking ,pinging,RSS submission,backlinking daily basis.In few days ,my page rank dropped to 0 and for past 3 months,it was 0 so I thought due to my aggressiveness ,may dropped to 0. Today I checked my page rank is 2. I have not used any scrapbox or Xrumer. I just used free tools and few backlinks. if you guys need any help let me know.