I've been doing some visits to other blogs, hopping here and there until I read about the explanation of how page ranking is done. As for now I have a bit nice page rank of 2 but it was much better few months ago for being ranked as 4. Anyways, for me having a good pagerank is really helpful especially when you are monetizing your blog. You may want a large number of opportunities so it is better to have a higher pagerank so advertisers would definitely come to you. I've seen this site - SmartPageRank and explains here the factors that would possibly increase your page rank. This is also includes explanations on how page ranking is done by google. Really complicated, i think you should check the site yourself.. Good day everyone and Happy Blogging!