Google`s main rule is that we need to focus on users what they want. The content should be user friendly. If we focus on this point, we definitely increase Google page rank easily. Never use many keywords in your same blog post. Keep as much as low number of keywords inside a post. Due to many keywords robots.txt file restricts the search engine to flow your documents. It may lead the panellization of your blog in Google.
Increase page rank(PR) is only one way to incoming links. But you there you told about how to increase search engine result page rank.
This is NOT a tutorial to incease your PR, it's most likely a common SEO strategy... Do you know the difference between these 2 things? To increause your PR, you should work on incoming links (Guest blogging is a good and fast way to do this!)