I've been promoting a product pretty succesfully for a couple of months, I have set up a landing page on a .com domain and I'm driving a lot of free traffic to it. I have recently out of curiosity checked my pr, and I noticed that it was a PR 2 . So since I have a PR 2 site I want to take advantage of it , would it be a good idea to maybe write some articles based on a keyword and post them on my site, then do some social bookmarking to each article. I'm not gonna touch the landing page, I don't want to distract the viewers with my articles. The Articles are meant only to generate some Search Engine Traffic. All I plan on doing on the landing page is to put some tiny or invisible hyperlinks to my articles, so that it gets link juice and it gets indexed faster on the big G. What do you think about this?